What is the complete ionic equation for the reaction between na2 So4 and cacl2?

What is the complete ionic equation for the reaction between na2 So4 and cacl2?
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Out of (a) 0.01 M KNO3 , (b) 0.01 M Na2 SO4 which aqueous soln. will exhibit high B. P.?

Description : Out of (a) 0.01 M KNO3 , (b) 0.01 M Na2 SO4 which aqueous soln. will exhibit high B. P.?

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Chemical formula of washing soda is (1) Na2 SO4 .10H2O (2) NaHCO3 (3) Na2CO3 .10H2O (4) Ca(OH)2

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The pair(s) which will show displacement reaction is/are (i) NaCl solution and copper metal (ii) AgNO3 solution and copper metal (iii) Al2(SO4)3 solution and magnesium metal (iv) ZnSO4 solution and iron metal (a) (ii) only (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (ii)

Description : The pair(s) which will show displacement reaction is/are (i) NaCl solution and copper metal (ii) AgNO3 solution and copper metal (iii) Al2(SO4)3 solution and magnesium metal (iv) ZnSO4 solution and iron metal (a) (ii) only (b) (ii) and (iii) (c) (iii) and (iv) (d) (i) and (ii)

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(a) State and explain Kohlrausch law. (b) How much electricity in terms of Faradays is required to produce 20 g of calcium from molten CaCl2? -Chemistry

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Calculate the formula unit mass of NaCl and CaCl2. -Chemistry 9th

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Last Answer : hii Here's your answer Molar mass of Na=23g/mol " " " Cl=35.5g/mol Formula unit mass of NaCl=23 + 35.5 = 58.5 gm per mole Molar mass of Ca=40g/mol Molar mass of Cl2= 35.5g/mol*2=70gm per mole F. U. M. = 40+70=110 gm per mole

What is the role of CaCl2 in the preparation of competent cells? -Biology

Description : What is the role of CaCl2 in the preparation of competent cells? -Biology

Last Answer : answer:

How many atoms are present in CaCl2?

Description : How many atoms are present in CaCl2?

Last Answer : There are three atoms in CaCl2 (calcium chloride) - one calcium atom and two chlorine atoms. It might be argued that there are ions inside the molecule instead of atoms. In that case there is one calcium ion and two chlorine ions.~credits to the original person who actually wrote this.

How many grams of Cl are in 385 g of CaCl2?

Description : How many grams of Cl are in 385 g of CaCl2?

Last Answer : 246 g

Artificial transformation in laboratory is carried out by treating the cells with a. MgCl2 b. Cacl2 c. NaCl d. HCl

Description : Artificial transformation in laboratory is carried out by treating the cells with a. MgCl2 b. Cacl2 c. NaCl d. HCl

Last Answer : Ans: B

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Last Answer : (3) it forms a solid CaCl2 × 4CH3OH

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Description : Stalactites and Stalagmites form due to the precipitation of : (1) CaCO3 (2) CaCl2 (3) MgCl2 (4) MgCO3

Last Answer : (1) CaCO3 Explanation: Stalactites and stalagmites are formed by water dripping or flowing from fractures on the ceiling of a cave. The dominant mineral in them is calcite (calcium carbonate) ... minerals that may be deposited include other carbonates, opal, chalcedony, limonite, and some sulfides.

Out of (a) 1 M CaCl2 (b) 1 M AlCl3 which aqueous soln. will show max. vapour pressure at 300 K ?

Description : Out of (a) 1 M CaCl2 (b) 1 M AlCl3 which aqueous soln. will show max. vapour pressure at 300 K ?

Last Answer : (a) 1 M CaCl3 , if we assume 100% dissociation, i for CaCl2 = 3 and AlCl3 = 4 and relative lowering of V. P. is directly proportional to i.

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Description : Give reasons : (a) Window glass of old building look milky. b) Window glass of old building is thick at bottom. (c) CaCl2  will introduce Schottky defect if added to AgCl crystal.

Last Answer : (a) Due to annealing over a number of years glass acquires some crystalline character. (b) Glass is not a true solid. But a super-cooled liquid of high viscosity. It has the property to ... to maintain electrical neutrality. Thus a hole is created and lattice site for every Ca2+ ion introduced. 

Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Description : Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane

Last Answer : (B) Butyl alcohol

In the production of soda ash by Solvay process, the by-product is (A) CaCl2 (B) NH4Cl (C) NH3 (D) NaOH

Description : In the production of soda ash by Solvay process, the by-product is (A) CaCl2 (B) NH4Cl (C) NH3 (D) NaOH

Last Answer : (A) CaCl2

Which of the following is not responsible for causing permanent hardness of water? (A) Ca(HCO3 )2 (B) CaCl2 (C) MgCl2(D) None of these

Description : Which of the following is not responsible for causing permanent hardness of water? (A) Ca(HCO3 )2 (B) CaCl2 (C) Mgcl2 (D) None of these

Last Answer : (A) Ca(HCO3 )2

Ammonia gas can be dried by (A) PCl5 (B) Quick lime (C) CaCl2 (D) Concentrated H2SO4

Description : Ammonia gas can be dried by (A) PCl5 (B) Quick lime (C) CaCl2 (D) Concentrated H2SO4

Last Answer : (B) Quick lime

The main constituent of bones is (A) CaF2 (B) Ca3(PO4)2 (C) CaCO3 (D) CaCl2

Description : The main constituent of bones is (A) CaF2 (B) Ca3(PO4)2 (C) CaCO3 (D) CaCl2

Last Answer : (B) Ca3(PO4)2

The compound which would have the greatest molar effect on the colligative properties of a dilute solution would be: w) CaCl2 x) NaCl y) C6H12O6 z) Benzene

Description : The compound which would have the greatest molar effect on the colligative properties of a dilute solution would be: w) CaCl2 x) NaCl y) C6H12O6 z) Benzene

Last Answer : ANSWER: W -- CaCl2

Stalactites and Stalagmites form due to the precipitation of : (1) CaCO3 (2) CaCl2 (3) MgCl2 (4) MgCO3

Description : Stalactites and Stalagmites form due to the precipitation of : (1) CaCO3 (2) CaCl2 (3) MgCl2 (4) MgCO3

Last Answer : CaCO3

What is Oxidation numbers for SO4?

Description : What is Oxidation numbers for SO4?

Last Answer : This should be SO4-2 ion. sulfur shows +6 in this ion.

What is Oxidation numbers for SO4?

Description : What is Oxidation numbers for SO4?

Last Answer : This should be SO4-2 ion. sulfur shows +6 in this ion.

The predominant action of plasma is (A) HCO3– (B) Cl– (C) HPO4– – (D) SO4 – –

Description : The predominant action of plasma is (A) HCO3– (B) Cl– (C) HPO4– – (D) SO4 – –

Last Answer : Answer : B

A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,

Description : A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,

Last Answer : Answer: (c) White, BaSO4

FeSO4 solution mixed with (NH4 ) 2 SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of Cu2+ ion. Explain why ?

Description : FeSO4 solution mixed with (NH4 ) 2 SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ ion but CuSO4 solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of Cu2+ ion. Explain why ?

Last Answer : When FeSO4 and (NH4 ) 2 SO4 solution are mixed in 1 : 1 molar ratio, a double salt is formed. It has the formula FeSO4 (NH4 ) 2 SO4 . 6 H2O. In aqueous solution, the salt dissociates. When CuSO4 and NH3 are mixed in the molar ratio of 1 : 4 in solution, a complex [Cu (NH3 ) 4 ] SO4 is formed.

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

Out of NaCl, MgSO4 , Al2 (SO4 ) 3 , K4 [Fe(CN)6 ], which one will bring about the coagulation of a gold sol quickest and in the least of concentration ?

Description : Out of NaCl, MgSO4 , Al2 (SO4 ) 3 , K4 [Fe(CN)6 ], which one will bring about the coagulation of a gold sol quickest and in the least of concentration ?

Last Answer : Ans. Al2 (SO4 ) 3 .

In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant(C) Produces lower purity acid(D) Is very costly

Description : In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process (A) Uses lower grade phosphate rock (B) Requires lower capital investment in the plant (C) Produces lower purity acid (D) Is very costly

Last Answer : (C) Produces lower purity acid

In water treatment, alum [Al2 (SO4 )3 ] is used for the process of (A) Filtration (B) Coagulation (C) Sedimentation (D) Disinfection

Description : In water treatment, alum [Al2 (SO4 )3 ] is used for the process of (A) Filtration (B) Coagulation (C) Sedimentation (D) Disinfection

Last Answer : (B) Coagulation

Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

Description : Alum [Al2 (SO4 )3 ] is used as a coagulant in water treatment to remove (A) Colour (B) Turbidity (C) Bacteria (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Prussian blue is chemically represented by (A) FeO.TiO2 (B) Ca SO4 . 2H2O (C) Fe4 [Fe (CN6 )3 ] (D) AlF3 . 3NaF

Description : Prussian blue is chemically represented by (A) FeO.TiO2 (B) Ca SO4 . 2H2O (C) Fe4 [Fe (CN6 )3 ] (D) AlF3 . 3NaF

Last Answer : (C) Fe4 [Fe (CN6 )3 ]

Which of the following has pH value 7? (1) Pure Water (2) H2 SO4 (3) Sodium Carbonate (4) HCl

Description : Which of the following has pH value 7? (1) Pure Water (2) H2 SO4 (3) Sodium Carbonate (4) HCl

Last Answer :  Pure Water

Aquaregia is a mixture of the following in the ratio 1 : 3 by volume (1) conc. HNO3 and conc. HCl (2) conc. HNO3 and conc. H2 SO4 (3) dil. HCl and dil. HNO3 (4) conc. HCl and conc. HNO3

Description : Aquaregia is a mixture of the following in the ratio 1 : 3 by volume (1) conc. HNO3 and conc. HCl (2) conc. HNO3 and conc. H2 SO4 (3) dil. HCl and dil. HNO3 (4) conc. HCl and conc. HNO3

Last Answer : dil. HCl and dil. HNO3

Which among the following is used as a catalyst in the production of high octane fuels? (1) HNO3 (2)H2 SO4 (3) HCl (4) HF

Description : Which among the following is used as a catalyst in the production of high octane fuels? (1) HNO3 (2)H2 SO4 (3) HCl (4) HF

Last Answer : H2 SO4

Glass is soluble in (1) H2 SO4 (2) HClO4 (3) HNO 3 (4) HF

Description : Glass is soluble in (1) H2 SO4 (2) HClO4 (3) HNO 3 (4) HF

Last Answer : HF

When conc. H2 SO4 is added to dry KNO3 , brown fumes are evolved. These fumes are due to (1) SO3 (2) SO2 (3) NO2 (4) N2O

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Last Answer : NO2

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