Q.

For a first-order reaction A→B the reaction rate of reactant concentration of 0.10 M is found to be 2.0 ×  10-5mole/lit/sec. The half life period of the reaction is

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answer is 4.

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Detailed Solution

rate=KA K=0.693t12 t12=0.693×Arate=0.693×0.12×10-5=3465 sec
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For a first-order reaction A→B the reaction rate of reactant concentration of 0.10 M is found to be 2.0 ×  10-5mole/lit/sec. The half life period of the reaction is