Write the balanced equation for the reaction of potassium carbonate and hydrochloric acid. What is the excess reagent in this experiment? What happens to that excess reagent at the end of the experiment? Calculate the mass of LiCl that would be produced if 1.5000 grams of Li_2CO_3 reacts with excess HCl. Calculate the mass of MgCO_3 that would be required to produce 1.0000 grams of MgCl_2. If only 4.000M HCl was available for you to use, calculate the volume of 4.000 M HCl solution required to completely react with 1.700 grams of Na_2CO_3.