Question

the following reaction is used for the preparation of oxygen gas in the laboratory
2KCIO3 gives 2KCL+3O2
which of the statement is correct about the reaction?
a)it is a decomposition reaction and endothermic in nature
b) it is a combination reaction
c) it is a decomposition reaction and accompanied by release of heat
d) it is a photochemical deacomposition reaction and exothermic in nature

Answer 1

Answer:

<a>

Explanation:

it is because in decomposition reaction always endothermic reaction took place

Answer 2

Answer: a) it is a decomposition reaction and endothermic in nature

Explanation:

Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

Example: $2KCl+3O_2\rightarrow$  

Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: $2KClO_3\rightarrow 2KCl+3O_2$

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants.

Decomposition involves breaking of bonds, thus energy is absorbed and thus are endothermic in nature.