For the first order reaction \( \mathrm{A} \rightarrow 2 \mathrm{~B}, 1 \) mole of reactant \( \...

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For the first order reaction \( \mathrm{A} \rightarrow 2 \mathrm{~B}, 1 \) mole of reactant \( \mathrm{A} \) gives 0.2 moles of B after 100 minutes. The half life of the reaction is min. (Round off to the Nearest Integer).
[Use: In \( 2=0.69 \), In \( 10=2.3 \)
Properties of logarithms: In \( x^{y}=y \) In \( \mathrm{x} ; \operatorname{In} \frac{\mathrm{x}}{\mathrm{y}}=\operatorname{In} \mathrm{x}-\operatorname{In} \mathrm{y} \) ]
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