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Define an expression for the rate consta...

Define an expression for the rate constant of a 1st order reaction. Define half life period. A first order reaction takes 69.3 minutes for 50% completion. How much time will be needed for 80% completion?

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What is half time period ? A first order reaction takes 69.3 minutes for 50 % completion. How much time will be needed for 80% completion.

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Derive the expression for first order rate constant. A first order reaction takes 69.3 min for 50% completion. How long will it take for 80% completion?

Derive an expression for rate constant of 1st order reaction. Write the unit of K. Show that for a 1st order reaction the time required for99.9% completion is 3 times the time required for 90% completion.

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