Question

12. Write one equation each for decomposition reactions where energy is supplied in
13. What is the difference between displacement and double displacement reactions?
In the refining of silver, the recovery of silver from silver nitrate solution involved
15. What do you mean by a precipitation reaction? Explain by giving examples.
displacement by copper metal. Write down the reaction involved.
16. Explain the following in terms of gain or loss of oxygen with two examples each.
Write equations for these reactions.
14.
the form of heat, light or electricity.
(a) Oxidation
(b) Reduction
17
nir becomes black in colour​

Answer 1

Explain by giving examples. When two reactants in solution react and one or more of the products is insoluble or forms a precipitate, the reaction is called a precipitation reaction. For example, when a solution of iron chloride and ammonium hydroxide are mixed, a brown precipitate of iron hydroxide is formed.