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QNEET-2017-Ch-961: NEET 2017 Chemistry - Class 12 NEET-2017-Ch-961 Solution: A first order reaction has a specific reaction rate of…

A first order reaction has a specific reaction rate of

10^{-2}\ \text{sec}^{-1}

. How much time will it take for 20 g of the reactant to reduce to 5 g? 138.6 sec 346.5 sec 693.0 sec 238.6 sec

Step-by-Step Verified Solution

For a first order reaction, k = 2.303 t log _ [ A ] 0 [ A ] t _ 10 -2 = 2.303 t log _ 20 5 _ t = 138.6 sec