# Consider the reaction A + 2B àC  + The rate law for this reaction is first order in A and zeroth order in B. If the rate constant at 25 ⁰C is 1.94 x 10-2 s-1 , what is the half life in minutes given an initial concentration of [A] =  0.45 M.

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1. Consider the reaction A + 2B àC  +

The rate law for this reaction is first order in A and zeroth order in B. If the rate constant at 25 ⁰C is 1.94 x 10-2 s-1 , what is the half life in minutes given an initial concentration of [A] =  0.45 M.

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Step 1

Half-life of a reaction is that the time required for concentration of reaction to gets decrease to one-half of the initial value.

Step 2

Given that the reaction is first order in terms of A and zero order in terms of B, the rate law can be written as shown below,

Step 3

The given reaction is a first order reaction with respect to A.  Half-life of a first order reaction does not depend upon the initial concentration because, the conc...

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### General Chemistry 