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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Sample Paper Topic Test - Thermo Chemistry (Thermodynamics)

  • question_answer
    One gram of an organic liquid X (molecular mass 78) liberates 160 J of heat on solidification. \[\Delta {{H}_{fusion}}\,\,(A)\] is:

    A) 19.2 kJ/mol

    B) 12.48 kJ/mol      

    C) 124.8 kJ/mol

    D) None of these

    Correct Answer: B

    Solution :

    [b] For 1 g liberates 160 J \[\therefore \] 78 g liberates \[160\times 78=1280\,J/mol\] \[12.480\,kJ/mol\]


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