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Question

A substance, 'A' decomposes by a first order reaction. Starting initially with [A] = 2.00 M, after 200 min, [A] =0.250 M. The t1/2 and rate constant for the reaction, are respectively:

A
66.63 s and 0.0104 s1
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B
66.63 min and 0.0104 min1
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C
99.93 min and 0.0347 min1
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D
None of these
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