Question

Which among the following is a false statement?

• A. Rate of zero order reaction is independent of initial concentration of reactant.
• B. Half-life of a zero order reaction is inversely proportional to the rate constant.
• C. Molecularity of a reaction may be zero.
• D. For a first order reaction, \( t_{1/2} = 0.693/k \).

Hint:

Molecularity is always a positive integer, representing the number of molecules involved in an elementary reaction step.

Answer 1

The Correct Option is C

The number of reacting species in an elementary reaction is known as molecularity, which must be greater than zero. A reaction requires at least one reacting molecule.
Step 2: Therefore, option (3) is the correct choice.