Answer to Question #214317 in General Chemistry for Sheik Sharmila

Question

Prepare a solution of CaCO₃ using percent composition by mass (13 %), molarity (2.5 M), molality (1.4 m), and normality (5.0 N).

Answer 1

Use of a standard commercial calcium solution, 1 g/L, is preferred. Alternatively this solution may be prepared by dissolving 2.5 g of calcium carbonate, CaC03, in sufficient hydrochloric acid (concentrated hydrochloric acid diluted 1:10) to dissolve it completely and making up to one liter with distilled water.