22. Given the reactant amounts specified in each chemical equation, determine the limiting reactant in each case: a. HCI NaOH — NaCl + H,0 2.0 mol 2 5 mol 2UICI ZnCl, + H, 2.5 mol 6.0 mol C. 2Fe(OH), + 3H.,SO Fe,(S0,), + 6H,0 4.0 mol 6.5 mol (Hint: See Sample Problem F.)

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.