In a catalytic reaction involving the formation of ammonia by haber process `N_(2)+3H_(2)rarr2NH_(3)` the rate of appearance of `NH_(3)` was measured as `2.5 xx10^(-4) mol L^(-1) S^(-1)` the rate of disappearance or `H_(2)` will be

Options

A. `2.50 xx10^(-4) mol L^(-1) s^(-1)`
B. `1.25 xx10^(-4) mol L^(-1) s^(-1)`
C. `3.75 xx10^(-4) mol L^(-1) s^(-1)`
D. `5.00 xx10^(-4) mol L^(-1)s^(-1)`

Answer

C

Explanation

`N_(2)(g)+3H_(2)(g)rarr2NH_(3)(g), Rate=(-d[N_(2)])/(dt)=(-d[H_(2)])/(3dt)=(+d[NH_(3)])/(2dt)`
`=3.75 xx10^(-4) mol^(-1) s^(-1)`