For a first order reaction, (A) → product, the concentration of A changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of A is 0.01 M, is:
A
1.73×10−5Mmin−1
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B
3.47×10−4Mmin−1
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C
3.47×10−5Mmin−1
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D
1.73×10−4Mmin−1
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Solution
The correct option is B3.47×10−4Mmin−1 For first order reaction, k=2.30340log0.10.025