Answer to Question #85819 in General Chemistry for Selina

Question

Does the amount of water that the sodium carbonate and calcium chloride crystals dissolved in, affect the amount of the precipitate that forms?

Answer 1

Na₂CO₃(aq) + CaCI2(aq)$\to$ 2NaCl(aq)+CaCO₃(s)

Yes, water will affect precipitate mass. Calcium carbonate has a solubility in pure water ~15 mg/L at 25°C. With every liter of water, the mass of sediment will decrease by 15mg.