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  5. Electrochemistry / विद्युत् रसायन

12th Class Chemistry Electrochemistry / विद्युत् रसायन

  • question_answer 28)
    How much electricity in terms of Faraday is required to produce (i) 20.0 g of Cu from molten CaCl2 (ii) 40.0 g of Al from molten Al2O3.  

    Answer:

    (i) CaCl2 contain Ca2+ ion. To produce 40 g Ca, electricity neede = 2F To produce 20 g Ca, electricity needed (ii) 27 g of Al is deposited by = 3F  is deposited by  


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