Ch 1 – Chemical Reactions and Equations

Ch 1 – Chemical Reactions and Equations
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Ch 1 – Chemical Reactions and Equations

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Answer :

Ch 1 – Chemical Reactions and Equations

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Write the balanced chemical equations for the following reactions and identify the type of reaction in each case: -SST 10th

Description : Write the balanced chemical equations for the following reactions and identify the type of reaction in each case: -SST 10th

Last Answer : This is an example of combination reaction. A combination reaction is one in which or more reactants combine to form a single product (b) NaOH(aq)-CH3COOH(l) → CH3COONa(aq)+H2O(l) This is an ... is also an exothermic reaction as it evolves a lot of heat. It is also known as oxidation reaction.

(a) Write the essential condition for the following reaction to take place: 2AgBr—-> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical reaction 2FeS04 — chemical-reactions-and-equations-chapter-wise-important-questions-class-10-science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Description : (a) Write the essential condition for the following reaction to take place: 2AgBr--> 2Ag + Br2 Write one application of this reaction. (b) Complete the following chemical equation of a chemical ... science-5 (c) What happens when water is added to quick line. Write chemical equation. -Chemistry

Last Answer : Answer. This reaction is used in photography. (c) Slaked lime is formed with hissing sound and lot of heat is envolved.

State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed. -Chemistry

Description : State the type of chemical reactions and chemical equations that take place in the following: (i) Magnesium wire is burnt in air. (ii) Electric current is passed through water. (iii) Ammonia and hydrogen chloride gases’are mixed. -Chemistry

Last Answer : This is the Answer:

Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry

Description : Write balanced chemical equations for the following reactions: (a) Dilute sulphuric acid reacts with aluminium powder. (b) Dilute hydrochloric acid reacts with sodium carbonate. (c) Carbon dioxide is passed through lime water. -Chemistry

Last Answer : i hope it helped you

Condiser the reactions, (i) `(CH_(3))_(2)CH-CH_(2)Broverset(C_(2)H_(5)OH)rarr(CH_(3))_(2)CH-CH_(2)OC_(2)H_(5)+HBr` (ii) `(CH_(3))_(2)CH-CH_(2)Broverse

Description : Condiser the reactions, (i) `(CH_(3))_(2)CH-CH_(2)Broverset(C_(2)H_(5)OH)rarr(CH_(3))_(2)CH-CH_(2)OC_(2)H_(5)+HBr` (ii) `(CH_(3))_(2)CH-CH_(2)Broverse

Last Answer : Condiser the reactions, (i) `(CH_(3))_(2)CH-CH_(2)Broverset(C_(2)H_(5)OH)rarr(CH_(3))_(2)CH-CH_(2)OC_(2)H_(5) ... N^(1))` D. `S_(N^(2)) and S_(N^(2))`

Consider the following sequence of reactions : `H_(2)C = CH-CH =CH_(2) overset(Br_(1)(1 "mole"))underset(C CI_(4))rarrA overset(1.KCN("excess"))unders

Description : Consider the following sequence of reactions : `H_(2)C = CH-CH =CH_(2) overset(Br_(1)(1 "mole"))underset(C CI_(4))rarrA overset(1.KCN("excess"))unders

Last Answer : Consider the following sequence of reactions : `H_(2)C = CH-CH =CH_(2) overset(Br_(1)(1 "mole"))underset(C ... ))underset(|)(CH)-(CH_(2))_(2)-NH_(2)`

Consider the following sequence of reactions: `overset(C CI_(4))underset(Delta)rarr A overset(1.CH_(2)=CH-CH_(2)Br)underset(2.H_(3)O^(o+),Delta)rarrB`

Description : Consider the following sequence of reactions: `overset(C CI_(4))underset(Delta)rarr A overset(1.CH_(2)=CH-CH_(2)Br)underset(2.H_(3)O^(o+),Delta)rarrB`

Last Answer : Consider the following sequence of reactions: `overset(C CI_(4))underset(Delta)rarr A overset(1.CH_(2)=CH-CH_(2) ... end product (B) is: A. B. C. D.

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the distance between adjacent carbon atoms is 1.39Å (intermediate between single and double bond lengths). The evidence suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane

Last Answer : Benzene

By applying the static equations i.e. H V M = 0, to a determinate structure, we may determine (A) Supporting reactions only (B) Shear forces only (C) Bending moments only (D) All the above

Description : By applying the static equations i.e. H V M = 0, to a determinate structure, we may  determine  (A) Supporting reactions only  (B) Shear forces only  (C) Bending moments only  (D) All the above

Last Answer : (D) All the above

Briefly explain the extraction of aluminium from alumina with chemical equations.

Description : Briefly explain the extraction of aluminium from alumina with chemical equations.

Last Answer : Aluminium oxide dissolved in molten cryolite is taken in a chamber with gently sloped base.The inner wall is made of carbon lining. Graphite rods are introduced in the electrolyte bath. The carbon lining ... is passed. Molten aluminium collects at the lining and flows out of the gently sloped base.

It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect? (a) The total mass of the elements present in the reactants is equal to the total mass of the elements present in the products. (b) The number of atoms of each element remains the same, before and after a chemical reaction. (c) The chemical composition of the reactants is the same before and after the reaction (d) Mass can neither be created nor can it be destroyed in a chemical Reaction.

Description : It is important to balance the chemical equations to satisfy the law of conservation of mass. Which of the following statements of the law is incorrect? (a) The total mass of the elements present in ... the reaction (d) Mass can neither be created nor can it be destroyed in a chemical Reaction.

Last Answer : Answer : (c) The chemical composition of the reactants is the same before and after the reaction

Is KOC(CH3)3 equivalent to KOH as a base in chemical equations?

Description : Is KOC(CH3)3 equivalent to KOH as a base in chemical equations?

Last Answer : This depends completely on the equation in question. For instance, both are strong bases, so if that's all you're worried about, yeah, they're about equivalent. But potassium tert-butoxide is way bulkier ... not in others. Those are the big differences that jump out to me, but there may be others.

what are 2 skeletal chemical equations?

Description : what are 2 skeletal chemical equations?

Last Answer : Zn + HCl → ZnCl2 + H2Mg + O2 → MgOSkeleton Equations are the equations in which there is only chemical formula of reactants and products but no state mentioned and no balancing of atoms on either side of Equation done.

How are chemical equations calculated?

Description : Isn't there a table or trick?

Last Answer : There is only one trick to it. Learn it.

Identify A, B, C, D and write the balanced chemical equations of formarion of A to B and A to C.

Description : Identify A, B, C, D and write the balanced chemical equations of formarion of A to B and A to C.

Last Answer : Identify A, B, C, D and write the balanced chemical equations of formarion of A to B and A to C.

What law of physics science must be followed when balancing chemical equations?

Description : What law of physics science must be followed when balancing chemical equations?

Last Answer : What is the answer ?

What does the line in chemical equations mean?

Description : What does the line in chemical equations mean?

Last Answer : What is the answer ?

Why is it useful to write chemical equations?

Description : Why is it useful to write chemical equations?

Last Answer : Need answer

Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → Magnesium oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride

Description : Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → ... oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride

Last Answer : (a) Iron + Chlorine → Iron (III) chloride 4Fe + 3Cl2 → 2F2Cl3 (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water 2Mg + 2H2SO4 → 2MgSO4 + 2H2 (c) Magnesium + oxygen → Magnesium oxide 2Mg ... hydroxide CaO + H2O → Ca(OH)2 (e) Sodium + chlorine → Sodium chloride 2Na + Cl2 → 2NaCl

Does the fact that emotions really are just chemical reactions take away from their power?

Description : Does the fact that emotions really are just chemical reactions take away from their power?

Last Answer : Chicken or egg. Did emotion cause the thought, or the thought the emotion. Sometimes we have no thought but experience an emotion. Or we feel an emotion and therefore think about what it is.

How dehydration helps in the preservation of food? (a) Growth of micro-organism is checked (b) Nutrients are concentrated (c) Surface of food stuffs becomes hard (d) Chemical reactions stop in the absence of water

Description : How dehydration helps in the preservation of food? (a) Growth of micro-organism is checked (b) Nutrients are concentrated (c) Surface of food stuffs becomes hard (d) Chemical reactions stop in the absence of water

Last Answer : Ans:(a)

The chemical reactions which never go to completion are called?

Description : The chemical reactions which never go to completion are called?

Last Answer : Reversible reactions

The relative tendency of the atoms to at- tract electrons in chemical reactions is called?

Description : The relative tendency of the atoms to at- tract electrons in chemical reactions is called?

Last Answer : Electronegativity

Mention the differences between chemical reactions and nuclear reactions.

Description : Mention the differences between chemical reactions and nuclear reactions.

Last Answer : Chemical reactions Nuclear reactions 1. Valence electrons of the atoms take part in the reaction 1. Electrons of an atom do not take part in nuclear reaction 3. Products are predictable. 3 ... elements or elements to compounds take place 5 Production of new elements and isotopes take place.

Chemical reactions are possible only because of

Description : Chemical reactions are possible only because of

Last Answer : movement and collision.

Give reason: Sand is used during roasting and as sand bath in chemical reactions.

Description : Give reason: Sand is used during roasting and as sand bath in chemical reactions.

Last Answer : As silicon has high thermal and non combustible property.

Water is a universal solvent for what reactions? A. Chemical B. Biochemical (Answer) C. Physica

Description : Water is a universal solvent for what reactions? A. Chemical B. Biochemical (Answer) C. Physical

Last Answer : B. Biochemical (Answer)

Is there any available software that can predict simple chemical reactions?

Description : Is there any available software that can predict simple chemical reactions?

Last Answer : Google is your friend = = = > Zn with CuSO4

Question about chemical reactions in chlorine?

Description : Question about chemical reactions in chlorine?

Last Answer : answer:Without reading up on it The moisture is changing the composition of the tablets by reacting with them, meaning they are not the original compound they're supposed to be. This could effect their ... to it, but I'd be cautious in that as heat tends to start a variety of reactions.

Write a balanced chemical equation with state symbols for the following reactions : -Chemistry-10

Description : Write a balanced chemical equation with state symbols for the following reactions : -Chemistry-10

Last Answer : (i) BaCl2 (aq) + Na2SO4 (aq) → BaSO4(s) + 2NaCl (aq) (ii) NaOH (aq) + HCl(aq) → NaCl(aq) + H2O(l)

Write the balanced equation for the following chemical reactions. (i) Hydrogen + Chlorine → Hydrogen chloride (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride (iii) Sodium + Water → Sodium hydroxide + Hydrogen -Chemistry-10

Description : Write the balanced equation for the following chemical reactions. (i) Hydrogen + Chlorine → Hydrogen chloride (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride (iii) Sodium + Water → Sodium hydroxide + Hydrogen -Chemistry-10

Last Answer : (i) H2 + Cl2 → 2HCl (ii) 3 BaCl2 + Al2(SO4)3 → BaSO4 + 2 AlCl3 (iii) 2Na + 2H2O → 2NaOH + H2↑

Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry

Description : Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry

Last Answer : This is the Answer.

What is the classification of chemical reactions ?

Last Answer : There are 3 categories of chemical reactions

In the following chemical reactions, the compounds A and B are respectively :

Description : In the following chemical reactions, the compounds A and B are respectively :

Last Answer : In the following chemical reactions, the compounds A and B are respectively : A. benzene ... C. Phenol and bromobenzene D. Fluorobenzene and phenol

In the chemical reactions the compounds `(A)` and `(B)` are .

Description : In the chemical reactions the compounds `(A)` and `(B)` are .

Last Answer : In the chemical reactions the compounds `(A)` and `(B)` are . A. ... diazonium chloride and fluorobenzene D. nitrobenzene and chlorobenzene

Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?

Description : Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?

Last Answer : Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ? A. `2HI + H_(2 ... rarr 2POCl_(3) + 2HCl + SO_(2)Cl_(2)`

Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?

Description : Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ?

Last Answer : Which of the following chemical reactions depicts the oxidizing behaviour of `H_(2)SO_(4)` ? A. `2HI + H_(2 ... rarr 2POCl_(3) + 2HCl + SO_(2)Cl_(2)`

The unbalanced chemical reactions given In list I show missing reagent or condition (?) Which are provided in List II. Match List I with List II and s

Description : The unbalanced chemical reactions given In list I show missing reagent or condition (?) Which are provided in List II. Match List I with List II and s

Last Answer : The unbalanced chemical reactions given In list I show missing reagent or condition (?) Which are provided in List II. ... (P,Q,R,S),(3,4,2,1):}`

Can enzymes slow down chemical reactions?

Description : Can enzymes slow down chemical reactions?

Last Answer : Need answer

What term refers to proteins that speed up chemical reactions in loving things?

Description : What term refers to proteins that speed up chemical reactions in loving things?

Last Answer : Need answer

Why does the Calvin cycle and the Krebs cycle are referred to as cycles of chemical reactions?

Description : Why does the Calvin cycle and the Krebs cycle are referred to as cycles of chemical reactions?

Last Answer : Need answer

What are All of the chemical reactions in an organism's cells are called?

Description : What are All of the chemical reactions in an organism's cells are called?

Last Answer : chemotrophy

What the step of Balancing chemical reactions?

Description : What the step of Balancing chemical reactions?

Last Answer : Feel Free to Answer

What is an example enzymes control chemical reactions?

Description : What is an example enzymes control chemical reactions?

Last Answer : Feel Free to Answer

Do Chemical reactions occur at the same rate no matter what the size of the reactant particles?

Description : Do Chemical reactions occur at the same rate no matter what the size of the reactant particles?

Last Answer : Need answer

What Chemical reactions are more likely to happen when?

Description : What Chemical reactions are more likely to happen when?

Last Answer : Need answer

What organic molecule function as a catalysts for chemical reactions in living organisms?

Description : What organic molecule function as a catalysts for chemical reactions in living organisms?

Last Answer : They are called enzymes, but there a probably billions of different enzymes. They are built from protein molecules decorated with sugars and sometimes include one or more metal atoms at their "active" site.

When chemical reactions occur energy is always absorbed?

Description : When chemical reactions occur energy is always absorbed?

Last Answer : No, chemical reactions can be endothermic or exothermic.