The value of rate constant for a first order reaction is 2.303 \times 10^{-2} \sec ^{-1}. What will be the time required to reduce the concentration to \frac{1}{10} th of its initial concentration?

GUJCET 2014 Chemistry Solved Paper

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The value of rate constant for a first order reaction is 2.303×10−2 sec−1.
What will be the time required to reduce the concentration to ‌

th of its initial concentration?

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