1. A sample of sodium carbonate (Na2CO3), which is a base (assume the titration endpoint is reached when one proton has been transfered, producing NaHCO3), with a mass of 0.2892 g is dissolved in water and used to standardize a solution of perchloric acid. An endpoint is reached when 32.03 mL of perchloric acid has been added. Determine the molarity (in mol/L) of the perchloric acid solution. Report your answer to four significant figures.

2. The standardized perchloric acid solution is then used to titrate 41.10 mL of a solution of sodium lactate (NaC2H5OCOO). An endpoint is reached when 18.22 mL of perchloric acid has been added. Determine the molarity (in mol/L) of the sodium lactate solution. Report your answer to four significant figures.