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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Heat of reaction

  • question_answer
    Which of the following equations correctly represents the standard heat of formation \[(\Delta H_{f}^{o})\] of methane [UPSEAT 2004]

    A)                 \[C\](diamond) \[+4{{H}_{(g)}}\to C{{H}_{4\,(g)}}\]

    B)                 \[C\] (diamond) \[+2{{H}_{2\,(g)}}\to C{{H}_{4\,(g)}}\]

    C)                 \[C\] (graphite) \[+2{{H}_{2\,(g)}}\to C{{H}_{4\,(g)}}\]

    D)                 \[C\] (graphite) \[+4{{H}_{(g)}}\to C{{H}_{4\,(g)\,}}\]

    Correct Answer: C

    Solution :

                    \[{{C}_{(graphite)}}+2{{H}_{2}}(g)\to C{{H}_{4}}(g)\]


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