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

  • question_answer
    \[2.2016\,gm\] of acetaldehyde produced \[13.95\,kcal\] of heat on combustion in \[{{O}_{2}}\]. Calculate the heat of combustion of \[C{{H}_{3}}CHO\]             [Bihar CEE 1995]

    A)                 279 kcal               

    B)                 972 kcal

    C)                 27.9 kcal              

    D)                 2.79 kcal

    Correct Answer: A

    Solution :

              \[\Delta H=\frac{13.95\times 44}{2.2016}=278.7\,\,kcal\].


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