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Calculate the mass of sodium sulphate required to prepare its 20% (mass percent) solution in 100 g of water.

Calculate the mass of sodium sulphate required to prepare its 20% (mass percent) solution in 100 g of water.

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
3 years ago
In a 20% solution containing 100 g water; the mass percentage of water = 100 — 20 = 80% 80% of solution is 100 gram 100% of solution is 100 gram 20% of solution is 100 # 20 = 25 gram Hence, to prepare 20% (w/w) solution in 100 gram of water 25 gram of sodium sulphate is needed.

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