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in water result into precipitation reaction under favourable condition? NOTE FOR THE TEACHER • The aqueous solutions of barium chloride and sodium sulphate can be prepared by dissolving 6.1 g BaCl 2.2H 2 O and 3.2 g of Na 2 SO 4.10H 2 O in water and then diluting them to 100 mL separately. QUESTIONS • Fill in the blanks:
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