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NEET-XII-Chemistry

03: Electrochemistry

 page 3
Qstn# II-13 Prvs-QstnNext-Qstn
  • #13
    How much electricity in terms of Faraday is required to produce
    () 20.0 g of Ca from molten CaCl2.
    () 40.0 g of Al from molten Al2O3.
    () 40.0 g of Al from molten Al2O3.
    () 40.0 g of Al from molten Al2O3.
    () 20.0 g of Ca from molten CaCl2.
    () 40.0 g of Al from molten Al2O3.
    () 40.0 g of Al from molten Al2O3.
    () 40.0 g of Al from molten Al2O3.
    Ans : null () According to the question,



    Electricity required to produce 40 g of calcium = 2 F

    Therefore, electricity required to produce 20 g of calcium

    = 1 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 40 g of calcium = 2 F

    Therefore, electricity required to produce 20 g of calcium

    = 1 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
  • #13-i
    20.0 g of Ca from molten CaCl2.
    () 40.0 g of Al from molten Al2O3.
    () 40.0 g of Al from molten Al2O3.
    Ans : According to the question,



    Electricity required to produce 40 g of calcium = 2 F

    Therefore, electricity required to produce 20 g of calcium

    = 1 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
    () According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F
  • #13-ii
    40.0 g of Al from molten Al2O3.
    Ans : According to the question,



    Electricity required to produce 27 g of Al = 3 F

    Therefore, electricity required to produce 40 g of Al

    = 4.44 F