Write a balanced chemical equation for the reaction of calcium carbonate and dil. hydrochloric acid.
Calcium carbonate reacts with aqueous HCl to give CaCl2 and CO2 according to the reaction, CaCO3 + 2HCl --> CaCl2 + H2O
What mass of CaCO3 is required to react completely with 25mL of 0.75 HCl?