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VMMC VMMC Medical Solved Paper-2014

  • question_answer
    When acidified \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]solution is added to \[S{{n}^{2+}}\]salts then \[S{{n}^{2+}}\]changes to

    A)  Sn                                         

    B) \[S{{n}^{3+}}\]

    C) \[S{{n}^{4+}}\]                                 

    D) \[S{{n}^{+}}\]

    Correct Answer: C

    Solution :

    \[C{{r}_{2}}O_{7}^{2-}+14{{H}^{+}}+3S{{n}^{2+}}\xrightarrow[{}]{{}}2C{{r}^{3+}}+3S{{n}^{4+}}\]\[+7{{H}_{2}}O\]


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