When is a precipitate observed?

When is a precipitate observed?
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Why is PbI2 precipitate yellow?

Description : Why is PbI2 precipitate yellow?

Last Answer : Colors are a fairly complicated subject. Essentially, a molecule or compound will be a particular color due to numerous factors, but it comes down to what colors are absorbed and what colors ... you might!), for instance Colbalt Chloride is blue: http://en.wikipedia.org/wiki/Cobalt%28II%29_chloride

_______ sediments originate from elements in seawater that precipitate out of solution. -General Knowledge

Description : _______ sediments originate from elements in seawater that precipitate out of solution. -General Knowledge

Last Answer : Hydrogenous sediments originate from elements in seawater that precipitate out of solution.

Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature (iii) Formation of precipitate -Chemistry

Description : Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature (iii) Formation of precipitate -Chemistry

Last Answer : (i)Cu (s) + 2AgNO3 (aq)———–> Cu(NO3)2(aq) + 2Ag The solution will become blue in colour and shiny silver metal will be deposited. (ii) NaOH + HCl ——&mdash ... )———–> Pbl2 (s) + 2KNO3 (aq) Yellow ppt Yellow precipitate of Pbl2will be formed.

Because of which factor, clouds do not precipitate in deserts? -Do You Know?

Description : Because of which factor, clouds do not precipitate in deserts? -Do You Know?

Last Answer : answer:

Which inorganic precipitate acts as semipermeable membrane? -Do You Know?

Description : Which inorganic precipitate acts as semipermeable membrane? -Do You Know?

Last Answer : answer:

What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of `Ag_(2)CrO_(4) and CrO_(4)`-ion conce

Description : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of `Ag_(2)CrO_(4) and CrO_(4)`-ion conce

Last Answer : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of ... D. `5.9xx10^(-6)` moles per litre

The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is

Description : The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is

Last Answer : The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is A. `(C_(2) ... -NH_(2)` D. `CH_(3)-CONH_(2)`

Compound (A) `C_(8)H_(9)Br`, gives a white precipitate when warmed with alcoholic `AgNO_(3)`. Oxidation of (A) gives an acid (B),`C_(8)H_(6)O_(4)`. (B

Description : Compound (A) `C_(8)H_(9)Br`, gives a white precipitate when warmed with alcoholic `AgNO_(3)`. Oxidation of (A) gives an acid (B),`C_(8)H_(6)O_(4)`. (B

Last Answer : Compound (A) `C_(8)H_(9)Br`, gives a white precipitate when warmed with alcoholic `AgNO_(3)`. Oxidation of ... . Identify the compound (A) A. B. C. D.

`(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be

Description : `(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be

Last Answer : `(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be A. `SCl_(2)` B. `PCl_(3)` C. `NCl_(3)` D. HCl

`(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be

Description : `(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be

Last Answer : `(P) overset(NaH)rarr (Q) uarr overset(CuSO_(4))rarr (R) darr` black precipitate, (P) may be A. `SCl_(2)` B. `PCl_(3)` C. `NCl_(3)` D. HCl

Which of the following hydrogen halides react with `AgNO_3` to give a precipitate that dissolves in hypo solution ? (I)HCl (II)HF (III)HI (IV)HBr

Description : Which of the following hydrogen halides react with `AgNO_3` to give a precipitate that dissolves in hypo solution ? (I)HCl (II)HF (III)HI (IV)HBr

Last Answer : Which of the following hydrogen halides react with `AgNO_3` to give a precipitate that dissolves in hypo solution ? (I) ... II),(I) D. (II),(IV),(III)

A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The sat

Description : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The sat

Last Answer : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate ... (D) X = `H_2`, Y = `Cl_2 `

Which one of the hydracid does not form any precipitate with `AgNO_(3)`?

Description : Which one of the hydracid does not form any precipitate with `AgNO_(3)`?

Last Answer : Which one of the hydracid does not form any precipitate with `AgNO_(3)`? A. (A) HF B. (B) HCI C. (C) HBr D. (D) HI

Silver nitrate solution when added to a colorless aqueous solution E forms a white precipitate which dissolves in excess of E. If the white precipitat

Description : Silver nitrate solution when added to a colorless aqueous solution E forms a white precipitate which dissolves in excess of E. If the white precipitat

Last Answer : Silver nitrate solution when added to a colorless aqueous solution E forms a white precipitate which dissolves in excess ... SO_(3)` D. `Na_(2)SO_(4)`

A sodium salt on treatment with `MgCl_(2)` gives white precipitate only on heating. The anion of the sodium salt is

Description : A sodium salt on treatment with `MgCl_(2)` gives white precipitate only on heating. The anion of the sodium salt is

Last Answer : A sodium salt on treatment with `MgCl_(2)` gives white precipitate only on heating. The anion of the sodium salt is A ... NO_(3)^(-)` D. `SO_(4)^(2-)`

A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The sat

Description : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The sat

Last Answer : A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives ... ` D. `X=H_(2), Y=Cl_(2)`

The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in aqueous solution is (are)

Description : The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in aqueous solution is (are)

Last Answer : The reagment (s) that can selectively precipitate `S^(2-)` from a mixture of `S^(2-)` and `SO_(4)^(2-)` in ... 3))_(2)` D. `Na_(2)[Fe(CN)_(5)NO]`

`Na_(2)CO_(3),NaCl, NaNO_(2),Na_(2)SO_(3),NaBr,CH_(3)CO O Na` are separately treated with `AgNO_(3)` solution. In how many cases white precipitate is/

Description : `Na_(2)CO_(3),NaCl, NaNO_(2),Na_(2)SO_(3),NaBr,CH_(3)CO O Na` are separately treated with `AgNO_(3)` solution. In how many cases white precipitate is/

Last Answer : `Na_(2)CO_(3),NaCl, NaNO_(2),Na_(2)SO_(3),NaBr,CH_(3)CO O Na` are separately ... solution. In how many cases white precipitate is/are obtained.

A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, which is insoluble in concentrated `

Description : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, which is insoluble in concentrated `

Last Answer : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, ... C. `NO_(2)^(-)` D. `S^(2-)`

A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide

Description : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide

Last Answer : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as ... (3-)` D. `SO_(4)^(2-)`

When a mixture containing phosphate is heated with conc. `HNO_(3)` and ammonium molybdated solution, a canary yellow precipitate is formed . The formu

Description : When a mixture containing phosphate is heated with conc. `HNO_(3)` and ammonium molybdated solution, a canary yellow precipitate is formed . The formu

Last Answer : When a mixture containing phosphate is heated with conc. `HNO_(3)` and ammonium molybdated solution, a canary yellow ... PO_(4). (NH_(4))_(2)MO_(4)`

Which of the following reagents turns white precipitate of AgCl yellow ?

Description : Which of the following reagents turns white precipitate of AgCl yellow ?

Last Answer : Which of the following reagents turns white precipitate of AgCl yellow ? A. `NaNO_(3)` B. `Na_(3)AsO_(3)` C. `Na_(3)AsO_(4)` D. NaCN

A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution of `Na_(2)CO_(3)`. The action of co

Description : A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution of `Na_(2)CO_(3)`. The action of co

Last Answer : A colouless solution of a compound gives a precipitate with `AgNO_(3)` solution but no precipitate with a solution ... `CaCl_(2)` C. `Nal` D. `NaBr`

Which of the following will not give white precipitate with ammoniacal silver nitrate solution ?

Description : Which of the following will not give white precipitate with ammoniacal silver nitrate solution ?

Last Answer : Which of the following will not give white precipitate with ammoniacal silver nitrate solution ? A. `CH_(3)-C-=C-CH_(3)` B. C. D.

A mixture of two organic compound gives red coloured precipitate with cuprous chloride and silver mirror on heating with Zn and `NH_(4)Cl` followed by

Description : A mixture of two organic compound gives red coloured precipitate with cuprous chloride and silver mirror on heating with Zn and `NH_(4)Cl` followed by

Last Answer : A mixture of two organic compound gives red coloured precipitate with cuprous chloride and silver mirror on heating ... mixture contains : A. B. C. D.

Assertion: A white precipitate is obtained when an aq solution of sodium thiosuphate is treated with `AgNO_(3)` solution and if the precipitate is hea

Description : Assertion: A white precipitate is obtained when an aq solution of sodium thiosuphate is treated with `AgNO_(3)` solution and if the precipitate is hea

Last Answer : Assertion: A white precipitate is obtained when an aq solution of sodium thiosuphate is treated with ... I is not correct and Statement-II is correct

What precipitate is formed from copper chloride and silver nitrate?

Description : What precipitate is formed from copper chloride and silver nitrate?

Last Answer : Silver chloride is the precipitate in this reaction.CuCl(aq) + AgNO3(aq)-->CuNO3(aq) + AgCl(s)

What is the precipitate formed between barium nitrate and potassium phosphate?

Description : What is the precipitate formed between barium nitrate and potassium phosphate?

Last Answer : The precipitate is barium phosphate - Ba3(PO4)2, very low soluble in water.

What is the Formula of the colored precipitate obtained in the sulfur test or lead acetate test?

Description : What is the Formula of the colored precipitate obtained in the sulfur test or lead acetate test?

Last Answer : What is the answer ?

What volume (in mL) of 0.25M NaSO4 solution is needed to precipitate all the barium as BaSO4(s) from 12.5mL of 0.15M Ba(NO3)2 solution?

Description : What volume (in mL) of 0.25M NaSO4 solution is needed to precipitate all the barium as BaSO4(s) from 12.5mL of 0.15M Ba(NO3)2 solution?

Last Answer : The chemical equation is:Ba(NO3)2 + Na2SO4 = BaSO4 + 2 NaNO3The volume (in mL) of 0,25M Na2SO4 solution needed to precipitate all the barium as BaSO4(s) from 12,5mL of 0,15M Ba(NO3)2 solution is 7,5 mL.

Where is the precipitate calcite commonly found to create interesting formation in the ground?

Description : Where is the precipitate calcite commonly found to create interesting formation in the ground?

Last Answer : Stalactites and stalagmites in caves.caves

To determine which of the products and precipitation reaction is the precipitate which of the following should you follow?

Description : To determine which of the products and precipitation reaction is the precipitate which of the following should you follow?

Last Answer : (Apex) solubility rules

In the genetic disorder of cystinuria, the patient excretes large quantities of cystine in their urine and its low solubility causes crystalline cystine to precipitate as stones in kidneys. The remedy involves ingesting Na HCO3. Reaction of this treatment is (A) NaHCO2 combines with cystine (B) NaHCO3 raises the pH above the isoelectric point of cystine (C) NaHCO3 prevents stone formation by hydrolysis of cystine to cysteine (D) None of these

Description : In the genetic disorder of cystinuria, the patient excretes large quantities of cystine in their urine and its low solubility causes crystalline cystine to precipitate as stones in kidneys. The remedy ... C) NaHCO3 prevents stone formation by hydrolysis of cystine to cysteine (D) None of these

Last Answer : Answer : C

Which of the following may precipitate an asthma attack? (a) Respiratory acidosis (b) Viran and bacterial infections (c) Respiratory alkalosis (d) Cranberry jiuce (e) Chocolate or Coca Cola

Description : Which of the following may precipitate an asthma attack? (a) Respiratory acidosis (b) Viran and bacterial infections (c) Respiratory alkalosis (d) Cranberry jiuce (e) Chocolate or Coca Cola

Last Answer : Ans: B

Lower dose of naloxone is required to (a) Antagonise the actions of nalorphine (b) Antagonise the actions of pentazocine (c) Precipitate withdrawal in mildly morphine dependent subjects (d) Precipitate withdrawal in highly morphine dependent subjects

Description : Lower dose of naloxone is required to (a) Antagonise the actions of nalorphine (b) Antagonise the actions of pentazocine (c) Precipitate withdrawal in mildly morphine dependent subjects (d) Precipitate withdrawal in highly morphine dependent subjects

Last Answer : Ans: D

Roxithromycin has the following advantages over erythromycin except (a) It is more effective in whooping cough (b) It causes less gastric irritation (c) It has longer plasma half-life (d) It is unlikely to precipitate theophylline toxicity

Description : Roxithromycin has the following advantages over erythromycin except (a) It is more effective in whooping cough (b) It causes less gastric irritation (c) It has longer plasma half-life (d) It is unlikely to precipitate theophylline toxicity

Last Answer : Ans: A

A colloidal system in which a liquid is dispersed in a liquid is called – (1) gel (2) emulsion (3) sol (4) precipitate

Description : A colloidal system in which a liquid is dispersed in a liquid is called – (1) gel (2) emulsion (3) sol (4) precipitate

Last Answer : (2) emulsion Explanation: An emulsion is a mixture of two or more liquids that are normally immiscible (nonmixable or unblendable). Emulsions are part of a more general class of two-phase ... ). Examples of emulsions include vinaigrettes, milk, mayonnaise, and some cutting fluids for metal working.

Which inorganic precipitate acts as semipermeable membrane?

Description : Which inorganic precipitate acts as semipermeable membrane?

Last Answer : Copper ferrocyonide

Because of which factor, clouds do not precipitate in deserts?

Description : Because of which factor, clouds do not precipitate in deserts?

Last Answer : Low humidity

Waxy crudes are treated with chemical additives mainly to (A) Depress its pour point (B) Dissolve wax (C) Precipitate wax (D) Remove wax

Description : Waxy crudes are treated with chemical additives mainly to (A) Depress its pour point (B) Dissolve wax (C) Precipitate wax (D) Remove wax

Last Answer : (A) Depress its pour point

Because of which factor, clouds do not precipitate in deserts?

Description : Because of which factor, clouds do not precipitate in deserts?

Last Answer : Low humidity

For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter. (A) Plate & frame (B) Shell & lea(C) Sand(D) Rotary vacuum

Description : For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter. (A) Plate & frame (B) Shell & lea (C) Sand (D) Rotary vacuum

Last Answer : (C) Sand

The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter. (A) Vacuum (B) Sand (C) Plate & frame (D) Rotary

Description : The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter. (A) Vacuum (B) Sand (C) Plate & frame (D) Rotary

Last Answer : (B) Sand

A cationic complex has two isomers A & B. Each has one Co3+, five NH3 , one Br and one SO4 2 . A gives a white precipitate with BaCl2 solution while B gives a yellow precipitate with AgNO3 solution. (a) What are the possible structures of the complexes A and B ? (a) Will the two complexes have same colour ?

Description : A cationic complex has two isomers A & B. Each has one Co3+, five NH3 , one Br and one SO4 2 . A gives a white precipitate with BaCl2 solution while B gives a yellow precipitate with AgNO3 ... are the possible structures of the complexes A and B ? (a) Will the two complexes have same colour ?

Last Answer : (a) [CO (NH3 ) 5 Br] SO4 and [CO (NH3 ) 5 SO4 ] Br  (b) NO

During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Description : During the process of isolation of DNA, chilled ethanol is added to (a) precipitate DNA (b) break open the cell to release DNA (c) facilitate action of restriction enzymes (d) remove proteins such as histones.

Last Answer : a) precipitate DNA

Which of the following observations is / are not correct about the given equation: Pb(NO 3 ) 2 (aq) + 2 KI (aq)  PbI 2 (s) + 2KNO 3 (aq) (a) PbI 2 is yellow precipitate insoluble in water (b) It is precipitation reaction (c) It is single displacement reaction (d) It is very fast reaction

Description : Which of the following observations is / are not correct about the given equation: Pb(NO 3 ) 2 (aq) + 2 KI (aq)  PbI 2 (s) + 2KNO 3 (aq) (a) PbI 2 is yellow precipitate insoluble in water (b) It is precipitation reaction (c) It is single displacement reaction (d) It is very fast reaction

Last Answer : (c) It is single displacement reaction

Which of the following compounds yields a yellow precipitate when warmed with a mixture of iodine in aqueous sodium hydroxide? (a) Acetophenone (b) Benzaldehyde(c) Benzophenone(d) Propanal

Description : Which of the following compounds yields a yellow precipitate when warmed with a mixture of iodine in aqueous sodium hydroxide? (a) Acetophenone (b) Benzaldehyde (c) Benzophenone (d) Propanal

Last Answer : Acetophenone

Which of the following will give a precipitate with excess bromine water? (a) Bromobenzene (b) Aniline (c) Nitrobenzene (d) Toluene

Description : Which of the following will give a precipitate with excess bromine water? (a) Bromobenzene (b) Aniline (c) Nitrobenzene (d) Toluene

Last Answer : Aniline

Which of the following carbohydrates will not give a red precipitate of Cu2O when heated with Benedict's solution? (a) Maltose (b) Glucose(c) Sucrose(d) Fructose

Description : Which of the following carbohydrates will not give a red precipitate of Cu2O when heated with Benedict's solution? (a) Maltose (b) Glucose (c) Sucrose (d) Fructose

Last Answer : Sucrose

Acetaldehyde on treatment with Fehling's solution gives a precipitate of (a) Cu (b) Cu2O (c) CuO (d) None of these

Description : Acetaldehyde on treatment with Fehling's solution gives a precipitate of (a) Cu (b) Cu2O (c) CuO (d) None of these

Last Answer : Cu2O