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  • The reaction is zero order. Half the of this reaction is <img alt

\mathrm{A \rightarrow B.} The reaction is zero order. Half the of this reaction is 40 \mathrm{~min}. The time taken for the concentration of A to reduce one - fourth of its initial value is

Option: 1

60 min


Option: 2

45 min


Option: 3

30 min


Option: 4

92 min


Answers (1)

best_answer

\mathrm{\begin{aligned} a-x & =\frac{a}{4} \\\\ x & =\frac{3 }{4 }a \\\\ t_{1 / 2} & =\frac{a}{2 k}=40 \mathrm{~min} \\\\ \frac{a}{k} & =80 \mathrm{~min} \\\\ t & =\frac{x}{t}=\frac{3 a}{4 k}=\frac{3 \times 80}{4}=60 \mathrm{~min} \end{aligned}}           

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