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March 28, 2017

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How many grams of sodium sulphate (mol. wt. 142) are required to make 1.2 liters of 0.5N solution

  • Chemistry - ,

    Technically one can't calculate this without knowing the reaction involved; however, is most problems of this type the usual is to use total + and - charge.
    Therefore, equivalent weight Na2SO4 = molar mass/+ charge = 142/2 = 81.
    How many equivalents do you need? That's
    N x L = 0.5N x 1.2L = ?
    Then ?equivalent x equivalent weight = grams Na2SO4.

  • physical pharmacy - ,

    48.6

  • Chemistry - ,

    4

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