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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.…

NEET UG 2004 — Chemistry Physical Chemistry

2004mcqmedium

Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K298 \mathrm{~K}298 K are −382.64 kJ mol−1-382.64 \mathrm{~kJ} \mathrm{~mol}^{-1}−382.64 kJ mol−1 and -145.6 JK−1 mol−1\mathrm{JK}^{-1} \mathrm{~mol}^{-1}JK−1 mol−1, respectively. Standard Gibbs energy change for the same reaction at 298 K298 \mathrm{~K}298 K is:

Official previous-year question

Held on 30 Apr 2004 · Verified 9 Jul 2026.

Options

  1. A

    −221.1 kJ mol−1-221.1 \mathrm{~kJ} \mathrm{~mol}^{-1}−221.1 kJ mol−1

  2. B

    −339.3 kJ mol−1-339.3 \mathrm{~kJ} \mathrm{~mol}^{-1}−339.3 kJ mol−1

  3. C

    −439.3 kJ mol−1-439.3 \mathrm{~kJ} \mathrm{~mol}^{-1}−439.3 kJ mol−1

  4. D

    −523.2 kJ mol−1-523.2 \mathrm{~kJ} \mathrm{~mol}^{-1}−523.2 kJ mol−1

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