If the concentration of water is high enough,we can assume it is constant(the reaction is first zero

题目

If the concentration of water is high enough,we can assume it is constant(the reaction is first zero-respect to water).In this case,the concentration of methyl formate in water is given by the following expression:[methyl formate]=[methyl formate](0)*e^(-Keff*t)
where [methyl formate](0) is the concentration of methyl formation at the start of the reaction,Keff is the effective constant,and t is time.
Prove that the expression above agrees with the rate law and write an expression for Keff of K=0.0233 and the concentration of water.

答案

C=C0e^-Keff*tthe derivation of t, so dC/dt=-Keff*C0*e^-Keff*t=-Keff*Cthus,the rate of C decrease -dC/dt=Keff*C （first order relative to C) Keff=K*[H2O]=0.0233[H2O]therefore, the rate of C decrease ...