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  • The half lite period of a first order chemical reaction is 4.4 minutes. The time required For the completion of 98 % of chemical reaction will beOption: 1</

The half lite period of a first order chemical reaction is 4.4 minutes. The time required For the completion of 98 % of chemical reaction will be

Option: 1

32.48


Option: 2

21.89


Option: 3

42.65


Option: 4

26.06


Answers (1)

best_answer

\mathrm{\begin{gathered} k=\frac{0.693}{t _{1} / 2}=\frac{0.693}{4.4}=0.15 \\\\ t=\frac{1}{k} \ln \frac{ao}{a t} \\\\ t=\frac{1}{0.15} \ln \frac{100}{2} \\\\ t=\frac{01}{0.15} \ln 50 \\\\ t=\frac{3.91}{0.15} \end{gathered}}

                  \mathrm{t=26.06}

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Shailly goel

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