Question

In a graph of time vs. log (a - x), for a first order reaction, intercept represents
a) 2.303 loga
_b) -2.303 k
loga
d) -2.303 k log a​

Answer 1

Solution:

The integral form of first order reaction is given by :

$\text{ln[A]}=-kt+\text{ln}[A]_o$

The equation of a line is given by :

y = mx +c

It means that the slope of the graph of time vs log(a-x) is -k and the y-intercept is ln[A] or log [A]

Hence, the correct option is (c).