A student plotted the measured half-life of reactant A (in seconds) versus the…

CHEMISTRY · Single correct · A Level · Chemistry · Rate equations · Rate equations

Problem

A student plotted the measured half-life of reactant A (in seconds) versus the initial concentration

[A]_0

(in

\text{mol}\,\text{L}^{-1}

). The data produced a straight line through the origin with a slope of

35\,\text{s}\,\text{M}^{-1}

. Which value of the rate constant

k

is most consistent with the graph? (a)

0.020\,\text{M}\,\text{s}^{-1}

(b)

0.014\,\text{M}\,\text{s}^{-1}

(c)

0.029\,\text{M}\,\text{s}^{-1}

(d)

0.0070\,\text{M}\,\text{s}^{-1}