Refer to the following problem: Barium chloride reacts with sodium sulphate to precipitate barium sulphate: BaCl₂ + Na₂SO4 → 2NaCl + BaSO4 (a) How many grams of barium chloride are needed to react with 100 g of sodium sulphate? (b) For precipitating 50 g of barium sulphate, how many grams of the reactants are consumed? (c) How many grams of sodium chloride would be obtained when 50 g of barium sulphate is precipitated? Ans: (a) 146.58 g (b) BaCl₂: 44.61 g; Na₂SO4: 30.43 g (c) 25.04 g

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