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Question

The components of a reaction after 0 mins and 20 mins are shown below.

Illustration showing red reactants at t=0 and red/blue at t=20, for chemical kinetics study.

After 7 half-life periods, what fraction of reactant is still present if the reaction is first-order?

Accepted Answer

[A]0/128

Answer

[A]0/7

Answer

[A]0/14

Answer

[A]0/144

The components of a reaction after 0 mins and 20 mins are shown below. After 7 half-life periods, what fraction of reactant is still present if the reaction is first-order?