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What is the half life period of a first ...

What is the half life period of a first order reaction having rate constant `10^-2sec^-1`?

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1st order rate constant,`lambda=10^-2sec^-1`
Half-life period,`T_(1/2)=0.693\\lambda=(0.693/10^-2)sec.=0.693xx10^2=69.3sec.`
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