English

Decomposition Reactions Require Energy Either in the Form of Heat Or Light Or Electricity for Breaking Down the Reactants. Write One Equation Each for Decomposition Reactions Where Energy is Supplied in the Form of Heat, Light and Electricity

Advertisements
Advertisements

Question

Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electricity

Advertisements

Solution

Those reactions in which a compound splits up into two or more simpler substances are known as decomposition reactions.

1)

2)

`2AgCl_((s))` + Sunlight  `2Ag_(s) + Cl_(2(g))`

3) 

shaalaa.com
  Is there an error in this question or solution?
2017-2018 (March) Delhi Set 1

RELATED QUESTIONS

Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.


The white solid compound A decomposes quite rapidly on heating in the presence of a black substance X to form a solid compound B and a gas C. When an aqueous solution of compound B is reacted with silver nitrate solution, then a white precipitate of silver chloride is obtained along with potassium nitrate solution. Gas C does not burn itself but helps burn other things.
(a) What is compound A?
(b) What is compound B?
(c) What is gas C?
(d) What do you think is the black substance X? What is its function?
(e) What is the general name of substances like X?


Give one example of a decomposition reaction which is carried out with electricity.


Name the product formed on strongly heating ferrous sulphate crystals. What type of chemical reaction occurs in this change?


Which of the following can be decomposed by the action of light?
(a) NaCl
(b) KCl
(c) AgCl
(d) CuCl


Classify the following reaction as combination, decomposition, displacement, precipitation and neutralization. Also balance the equation.

\[\ce{Zn_{(s)} + H2SO4 -> ZnSO4_{(s)} + H2_{(g)}}\]


Explain the following type of chemical reaction, giving two examples for it:

Decomposition reaction


What are thermal decomposition reactions ? Explain with an example.


Answer the following question.
2 g of silver chloride is taken in a china dish and the china dish is placed in sunlight for some time. What will be your observation in this case? Write the chemical reaction involved in the form of a balanced chemical equation. Identify the type of chemical reaction.


Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×