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Standard enthalpy and standard entropy changes for the oxidation of ammonia at \( 298 \mathrm{~K} \) are \( -382.64 \mathrm{~kJ} \mathrm{~mol}^{-1} \) and \( -145.6 \mathrm{~J} \mathrm{~mol}^{-1} \), respectively.
\( \mathrm{P} \) Standard Gibbs' energy change for the same reaction at \( 298 \mathrm{~K} \) is
(a) \( -221.1 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(b) \( -339.3 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(c) \( -439.3 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
(d) \( -523.2 \mathrm{~kJ} \mathrm{~mol}^{-1} \)
\( (2004) \)
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