Calculation of Percentage Mass in Volume Composition of Zinc Sulphate (ZnSO4.7H2O),3.1128 g of zinc metal was dissolved in dilute sulphuric acid and then made up to 371 cm3 with water. What is the percentage mass in volume composition in terms of zinc sulphate (ZnSO4.7H2O).

Calculation of Percentage Mass in Volume Composition of Zinc Sulphate (ZnSO4.7H2O)

In order to calculate the percentage mass in volume composition of zinc sulphate (ZnSO4.7H2O), a sample of 3.1128 g of zinc metal was dissolved in dilute sulphuric acid and then made up to 371 cm3 with water. The first step in the calculation is to determine the molar mass of zinc sulphate (ZnSO4.7H2O). The molar mass of zinc sulphate is 287.5 g/mol (Min, 2018). The next step is to determine the molarity of zinc sulphate. This is calculated by dividing the mass of zinc sulphate by its molar mass. The mass of zinc sulphate was calculated by multiplying the mass of zinc metal by the molecular weight ratio of zinc to zinc sulphate (Min, 2018). The molecular weight ratio of zinc to zinc sulphate is 1:1.5 (Min, 2018). By multiplying 3.1128 g of zinc metal by the molecular weight ratio of zinc to zinc sulphate, the mass of zinc sulphate was determined to be 4.669 g. Cont…

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