1.

Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 kJ mol^(-1) and -145.6 JK^(-1) mol^(-1), respectively. Standard Gibbs energy change for the same reaction at 298 K is

Answer»

`-439.3 KJ MOL^(-1)`
`-523.2 kJ mol^(-1)`
`-221.1 kJ mol^(-1)`
`-339.3 kJ mol^(-1)`

SOLUTION :`DeltaG=DeltaH-TDeltaS`
`DeltaG=-382.64-(-145.6)xx10^(-3)xx298`
`=-339.3 kJ mol^(-1)`


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