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Q.

For a first order reaction t0.75 is 138.6 sec. Its specific rate constant is (in s−1 )

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a

10−2

b

10−4

c

10−5

d

10−6

answer is A.

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Detailed Solution

k=2.303t×logC0Ct

k=2.303138.6×log10025

k=10-2

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