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NEET Sample Paper NEET Sample Test Paper-59

  • question_answer
    The compound used for gravimetric estimation of Cu(II) is:

    A) \[C{{u}_{2}}{{(SCN)}_{2}}\]               

    B) \[C{{u}_{2}}O\]

    C) \[C{{u}_{2}}{{I}_{2}}\]                                  

    D) \[C{{u}_{2}}C{{O}_{3}}\]

    Correct Answer: A

    Solution :

    [a] \[C{{u}_{2}}{{(SCN)}_{2}}\] It is a white precipitate. It is used for the gravimetric estimation of Cu(II) by first reducing it with \[{{H}_{2}}S{{O}_{3}}\]and then complexing Cu(I) thus obtained with\[SC{{N}^{}}\].


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