If the half-life period of a first order reaction is 138.6 min, then the value of decay constant for the reaction will be `("in min"^(-1))`
If the half-life period of a first order reaction is 138.6 min, then the value of decay constant for the reaction will be `("in min"^(-1))`
A. 5
B. 0.5
C. 0.05
D. 0.005
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Correct Answer - D
`lambda=(0.693)/(t_(1//2)),Given, t_(1//2)=138.6min`
`therefore" "lambda=(0.693)/(138.6)=0.005"min"^(-1)`
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