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 [IIT JEE (Screening) 1992]

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

    B)                 \[C(graphite)+2{{H}_{2}}(g)=C{{H}_{4}}(l)\]

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

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

    Correct Answer: C

    Solution :

              \[{{C}_{(\text{graphite})}}+2{{H}_{2(g)}}=C{{H}_{4(g)}}\].


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