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Jonathan Nichols edited Intro1.tex
over 9 years ago
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\end{equation}
\begin{equation}
k(t)\equiv(\frac{d\frac{1}{(S(t)^{n-1)}}}{dt})
\end{equation}
When it comes to mixed second order reactions, the rate law does not allow a survival function to be obtained for the process because the rate law only allows the survival function of one reactant to be looked at. The rate law of a mixed second order reaction is
\begin{equation}
\int\frac{dx}{([A_0]-x)([B_0]-x)}=k(t)
\end{equation}
Taking the time derivative of the left hand side gives
\begin{equation}
\int\frac{\frac{dx}{dt}}{{([A_0]-x)([B_0]-x)}}dt=k(t)
\end{equation}
And from that definition of k(t), we get the inequality.