Standard enthalpy and standard entropy change for the oxidation of `NH_(3)` at `298K` are `-382.64KJ mol^(-1)` and `145.6Jmol^(-1)` respectively. Standard free energy change for the same reaction at `298K` is

Options

A. `-439.3 k J mol^(-1)`
B. `221.1 kJ mol^(-1)`
C. `-339.3 kJ mol^(-1)`
D. `-526.2 kJ mol^(-1)`

Answer

C

Explanation

`DeltaG^(@)=DeltaH^(@)-TDeltaS^(@)`
`=-382.64-298xx(-145.6xx10^(-3))`
`=-339.3 k J mol^(-1)`