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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Topic Test - Thermodynamics and Thermochemistry (8-5-21)

  • question_answer
    The molar heat capacity of water at constant pressure is \[75\,\,J{{K}^{-1}}mo{{l}^{-1}}\]. When 1.0 kJ of heat is supplied to 100 g of water which is free to expand the increase in temperature of water is

    A) 6.6 K

    B) 1.2 K

    C) 2.4 K

    D) 4.8 K

    Correct Answer: C

    Solution :

    [c] Heat capacity of water per gram\[=\frac{75}{18}=4.17J\]
                \[Q=mst\] ; \[1000=100\times 4.17\times t\]
                \[t=\frac{1000}{100\times 4.17}=2.4K\].


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