Question

If initial concentration is doubled, the time for half reaction is also doubled, the order of reaction is

• A. zero
• B. first
• C. second
• D. third

Answer 1

Answer: (A)

zero

Answer 2

$t_{1/2} \propto \frac{1}{(cone, of reactant)^{n-1}}$For zero order, n = 0 The half life period $\propto$ (cone, of reactant).In the question, the time for half reaction is doubled when initial concentration is doubled it is zero order reaction.