<p>Standard enthalpy and standard entropy change for the oxidation of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>N</mi><msub><mi>H</mi><mn>3</mn></msub></math>&nbsp;at 298K are -382.64 kJ&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>o</mi><msup><mi>l</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>&nbsp;and -145.6 J&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>o</mi><msup><mi>l</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>&nbsp;respectively. Standard free energy change for the same reaction at 298 K is:</p>