Next Step: Reaction Order (ISC 12)

Exercise and reference answers

Questions

1. Question

   Unit of rate constant for a first-order reaction is

   Correct

   per second

   Choices

   1. per second
   2. mol/L/s
   3. L/mol/s

2. Question

   For a zero-order reaction, the rate is

   Correct

   constant

   Choices

   1. constant
   2. proportional to [A]
   3. proportional to [A]^2

3. Question

   Half-life of a first-order reaction equals

   Correct

   0.693 / k

   Choices

   1. 0.693 / k
   2. 1 / k
   3. k / 2

4. Question

   The slowest step in a mechanism is the

   Correct

   rate-determining step

   Choices

   1. rate-determining step
   2. fastest step
   3. equilibrium step

Instructions

Pick the correct completion for each prompt.