How do I calculate the mass percent of a compound after the compound has been titrated using another chemical solution?
- A sample of limestone weighing 1.005 g is dissolved in 75.00 mL of 0.2500 M hydrochloric acid. The following reaction occurs:
CaCO3(s) + 2H+(aq) àCa2+(aq) + CO2(g) + H2O
It is found that 19.26 mL of 0.150M NaOH is required to titrate the excess HCl left after the reaction with the limestone. What is the mass percent of CaCO3 in the limestone
I know that mass percent is calculated by the total mass of an element over the mass of the compound and then multiplied by 100%, but if they're asking for the total mass percent of the compound wouldn't that just be 100%?