If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content



A student conducts an experiment to determine the molarity of a KA2COA3(aq) solution of unknown concentration. The student mixes 100.mL of the solution with excess CaClA2(aq), causing CaCOA3(s) to precipitate. The student then filters and dries the precipitate and records the data in the table below. (The molar mass of CaCOA3 is 100.g/mol.)
Mass of filter paper0.70 g
Mass of filter paper + CaCOA3 precipitate1.95 g
What is the molarity of the KA2COA3(aq) solution?
Choose 1 answer: