Question

A plot of logarithm of rate vs logarithm of concentration of the reactant in a first order reaction is straight line whose slope is `tan theta`, where `theta` is
A. `A. 45^(@)`
B. `B. 135^(@)`
C. `C. 90^(@)`
D. `D. log k`

Answer 1

Correct Answer - A
`(-dc)/(dt)=k.c` (for first order reaction)
` log((-dc)/(dt))=(1)logc+logk`
Slope of the straight line is `1` and hence `theta= 45^(@)`