JCECE Medical JCECE Medical Solved Paper-2014

  • question_answer
    The percentage of water of crystallisation of a sample of blue vitriol is

    A)  34.07%            

    B)  35.07%

    C)  36.07%            

    D)  37.07%

    Correct Answer: C

    Solution :

    Blue vitriol is \[CuS{{O}_{4}}.5{{H}_{2}}O.\] Molecular weight of \[CuS{{O}_{4}}.5{{H}_{2}}O=249.5\] % of water of crystallization\[=\frac{5\times 18}{249.5}\times 1000\] \[=36.07%\]


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