Consider a first order gas phase decompostion reaction gives below
`A(g) to B(g) to C(g)`
The initial pressure of the system before decomposition of A `p_(i)`. After lapse of time 't' total pressure of the system increased by x units and became `p_(t)`. The rate constant K for the reaction is given as....... .

Options

A. `k=2.303/t log p_(i)/(p_(i)-x)`
B. `k=2.303/t log (p_(i))/(2p_(i)-p_(i))`
C. `k=2.303 /t log p_(i)/(2p_(i)+p_(i))`
D. `k = 2.303/t log p_(i)/(p_(i)+x)`

Answer

B