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For the sequently reaction A overset (...

For the sequently reaction
`A overset (K_A) to B overset (K_B) to C` rate constant `K_A` and `K_B` are `5xx 10^6` and `3xx10^6 s^-1` respectively. Determine the time at which [B] is maximum

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`t_(max) = 1/(k_A-k_B) In(k_A/k_B) = 2.5xx10^-7 s`
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