The unit of rate constant, k for a first order reaction is ____(a) (time)^-1(b) mol. time(c) \(\frac{mol}{m^3} \)(d) \(\frac{mol}{m^3×s} \)I got this question by my school teacher while I was bunking the class.This interesting question is from Reaction Rates in portion Basic Concepts of Chemical Reaction Engineering

The unit of rate constant, k for a first order reaction is ____(a) (ti

1.	The unit of rate constant, k for a first order reaction is ____(a) (time)^-1(b) mol. time(c) \(\frac{mol}{m^3} \)(d) \(\frac{mol}{m^3×s} \)I got this question by my school teacher while I was bunking the class.This interesting question is from Reaction Rates in portion Basic Concepts of Chemical Reaction Engineering
Answer» Right OPTION is (a) (time)^-1 The explanation: Rate of 1st order reaction, (-rA) = kCA^n Unit of rate = \(\FRAC{MOL}{m^3×s}\) Concentration, CA is in \(\frac{mol}{m^3} \) Hence, unit of K is \(\frac{\frac{mol}{m^3×s}}{\frac{mol}{m^3}}\) = (sec)-1.

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