For a zero-order reaction, if the initial concentration is doubled, the half-life:
ARemains the same
BHalves
CBecomes four times
DDoubles
Answer & Solution
Correct answer: D. Doubles
Zero-order **t_(1/2) = [R]₀/(2k)** — directly proportional to initial concentration. Doubling [R]₀ → t_(1/2) doubles. (Contrast first-order, where t_(1/2) is independent of [R]₀.)
Related questions
Chemical kinetics studies the rate of a reaction and also its:Manganese dioxide is given as a catalyst for the decomposition of:A catalyst increases the rate of a reaction without itself being:Lowering the activation energy of a reaction makes the rate:Raising the temperature of a reaction makes the rate:The exponential factor gives the fraction of molecules with kinetic energy:Arrhenius was a chemist from:The physical justification of that equation was provided by: