How Do You Calculate the Rate Constant for a First Order Reaction?

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SUMMARY

The discussion centers on calculating the rate constant (k) for a first-order reaction using the remaining concentration of reactant after a specified time. Given that 33.8% of the reactant remains after 35 minutes, the half-life equation for first-order reactions can be applied to derive the rate constant. The formula k = (0.693 / t1/2) is relevant, where t1/2 can be determined from the remaining concentration.

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  • Understanding of first-order reaction kinetics
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helpimstuck
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I have a first order reaction that after 35 minutes 33.8% of the reactant remains, i am trying to find out the rate constant k from these two figures but i am rubbish at physical chemisty can anyone point me in the wright direction please?
 
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use the half life equation...
 

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