Each tablet contains the same number of moles Caco, and MgCog. One tablet reacted with excess hydrochloric acid to produce 0.24 dm3 of carbon dioxide at r.t.p. CaCo3 + 2HCl → CaCl2 + CO2 + MgCO3 + 2HCl → Mgci, + CO2 (i) Calculate how many moles of Caco, there are in one tablet. number of moles CO2 number of moles of Caco, and MgCO3 = number of moles of CaCO3 [3] (ii) Calculate the volume of hydrochloric acid, 1.0 mol/dm3, needed to react with one tablet. number of moles of Caco, and MgCo, in one tablet Use your answer to (c)(i). number of moles of HCI needed to react with one tablet = volume of hydrochloric acid, 1.0 mol/dm3, needed to react with one tablet [2] 2. Sulphur dioxide reacts with chlorine in an addition reaction to form sulphuryl chloride. So, + Cl → SOCI, 8.0g of sulphur dioxide was mixed with 14.2g of chlorine. The mass of one mole of so,cl, is 135g. Calculate the mass of sulphuryl chloride formed by this mixture. Calculate the number of moles of So, in the mixture = ...... Calculate the number of moles of Cl, in the mixture - Which reagent was not in excess? How many moles of so, Cl, were formed = ........