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A current of 0.965 A is passed through 500 ml of 0.2 M solution of ZnSO4 for 10 min. The molarity of Zn 2+ after deposition of Zn is
1. 0.1M
2. 0.5M
3. 0.8M
4. 0.194M

  • chemistry - ,

    amperes x seconds = coulombs.
    coulombs/96,485 = Faradays
    1 Faraday will deposit 1 equivalent weight (1/2 mole) Zn.
    Subtract moles Zn from initial Zn concn and change to molarity.

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