Question

Which of the following is not a reversible reaction?

(a) Formation of NH3 rate

(b) Decomposition of NH3 rate

(c) Decomposition of potassium chlorate

(d) Reaction of gaseous hydrogen with iodine vapors

The question was posed to me in quiz.

Asked question is from Basic Reaction Theory topic in section Homogenous Reactions of Bioprocess Engineering

Answer 1

Correct option is (c) Decomposition of potassium chlorate

Explanation: Chemical reactions in which the products thus formed during a chemical change do not combine and produce back the reactants are better known as irreversible reactions. Decomposition of potassium chlorate into potassium chloride and oxygen after heating.

In the above reaction however, the products are not combining to form back the potassium chlorate. In case of physical and chemical processes which are irreversible in nature, the changes are found to be uni direction and the processes is completed.