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Title: determine the mass of potassium carbonate needed to fully precipitate all the ca Post by: elle7nc on Oct 30, 2013 determine the mass of potassium carbonate needed to fully precipitate all the calcium from a 25 mL sample of 15% calcium chloride solution. How do I do this or what other information do I need. There is a note: this is the same concentration as the solution you used in the first experiment. Please help.
Title: Re: determine the mass of potassium carbonate needed to fully precipitate all the ca Post by: padre on Oct 30, 2013 K2CO3 + CaCl2 -----> CaCO3 + 2 KCl
15 g of CaCl2 moles = 15/111 = 0.135 15 g of K2CO3 moles = 15/138.2 = 0.1085 Limiting reagent = K2CO3 |