What data should be plotted to show that experimental concentration data fits a first-order reaction? a) 1/[reactant] vs. time b) [reactant) vs. time c) in[reactant] vs. time d) in(k) vs. 1/1

C) In[reactant] vs. time

Explanation:

For a first order reaction the integrated rate law equation is:

where A(0) = initial concentration of the reactant

A = concentration after time 't'

k = rate constant

Taking ln on both sides gives:

Therefore a plot of ln[A] vs t should give a straight line with a slope = -k

Hence, ln[reactant] vs time should be plotted for a first order reaction.

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