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NEET Chemistry Electrochemistry / विद्युत् रसायन Question Bank Self Evaluation Test - Electrochemistry

  • question_answer
    A solution of copper sulphate \[\left( CuS{{O}_{4}} \right)\] is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of\[Cu=63u\]) is:

    A) 0.3892 g          

    B) 0.2938 g

    C) 0.2398 g          

    D) 0.3928 g

    Correct Answer: B

    Solution :

    [b] W=Zit where Z = Electrochemical equivalent Eq. wt. of copper \[=\frac{63}{1}=31.5\] \[Z=\frac{31.5}{96500}\] \[W=Zit=\frac{31.5}{96500}\times 1.5\times 10\times 60=0.2938\,g\]


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