For firt order reaction, fraction fo colllisions with proper orientation of colloiding molecules is `1xx10^(-2)`, collision frequency is `2xx10^(4)` and fraction of successive collisions is `0.5xx10^(3)`, then the rate constant for the reaction is

Options

A. `2.5 xx10^(-4) sec^(-1)`
B. `1xx10^(5) sec^(-1)`
C. `1xx10^(-9) `mol `dm^(-3)`
D. `1xx10^(5)mol dm^(3)sec^(-1)`

Answer

B

Explanation

K=(oriention of colloidal molecules )`xx` (collision frequency )`xx` ( fraction of successive collisions )
`1xx10^(-2) xx2xx10^(4)xx0.5xx10^(3)=1xx10^(5) S^(-1)`