The equation for the reaction between Calcium carbonate and hydrochloric acid is: CaCO3(s)+HCl(aq)CaCl2(aq)+CO2(g)+H2O(l).H=30.2kJmol1 a) Draw the energy profile diagram for the reaction labelling the reactants, products, activation energy (Ea) and change in enthalpy (H). (2 marks) b) A chemist sets up a reaction vessel containing 0.35g of calcium carbonate chips with 1.00 molL1HCl at 25C Give the effect each of the following changes would have on the initial rate of carbon dioxide gas production and explain the effect in terms of collision theory. i. Using 0.50molL1HCl instead of 1.00molL1HCl ii. Increasing the temperature at which the experiment is run to 50C (2 marks)