For a first order reaction, a plot of \( \log (a-x) \) against time is a straight line with a ne...

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For a first order reaction, a plot of \( \log (a-x) \) against time is a straight line with a negative slope equal to
(a) \( \frac{-\mathrm{k}}{2.303} \)
(b) \( -2.303 \mathrm{k} \)
(c) \( \frac{2.303}{\mathrm{k}} \)
(d) \( -\frac{E_{a}}{2.303 \mathrm{R}} \)
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