a) 24.6 ml volume of HCl solution reacts completely with a solid sample of magnesium carbonate, producing 183 ml of gaseous product (there is only one gaseous product from the reaction). The gaseous product is collected over water at 24.0C and 738 torr pressure. What is the molarity of the HCl solution?
b) a 48.90 mL sample of 0.2040 M acid reacts with an excess of sodium carbonate to produce 125.0 mL of carbondioxide at 722 mmHg and 17 degree. The acid is HCl, H2SO4, or H3PO4. Which acid is it?