A student monitors the concentration of a catalyst during a reaction for 600 ,s

CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics

Problem

A student monitors the concentration of a catalyst

\mathrm{C}

during a reaction for 600\,s. Which of the following concentration–time curves is most consistent with ideal catalytic behavior (no deactivation and no additional catalyst added after

t=0

)? (a) Oscillates between

0.005\,\text{M}

and

0.015\,\text{M}

with a

100\,\text{s}

period. (b) Remains constant at

0.010\,\text{M}

for the entire

600\,\text{s}

interval. (c) Starts at

0.010\,\text{M}

and decreases linearly to

0\,\text{M}

600\,\text{s}

. (d) Increases linearly from

0.000\,\text{M}

t=0

0.010\,\text{M}

600\,\text{s}

Related theory

Collision theory
Chemical Kinetics
Collision Theory of Chemical Reactions

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