(T/I=4) When zinc metal, Zn(s), is placed in a solution of hydrochloric acid, HCl(aq), a chemical reaction occurs that forms hydrogen gas, H2(g), and aqueous zinc chloride, ZnCl2(aq). This reaction is exothermic, as shown by the following balanced chemical equation For each of the following, predict the effect on the rate of this reaction. (i) The concentration of hydrochloric acid is increased. (ii) The reaction mixture is cooled. (iii) Finely ground zinc is used instead of large chunks of zinc. (iv) A solution of copper (II) sulfate, CuSO4(aq), is used as a catalyst. 2) b) (C=4) Justify your predictions using the collision theory.
