The reaction of the strong acid HCl with the weak base CH3NH2 is HCl(aq)+CH3NH2(aq)CH3NH3+(aq)+Cl(aq) To compute the pH of the resulting solution if 24.0mL of 0.348M acid is mixed with 46.1mL of 0.598M base, we need to start with the stoichiometry. Let us do the stoichiometry in steps. How many moles of acid? number of moles: How many moles of base? What is the limiting reactant? number of moles: How many moles of the excess reagent after reaction? limiting reactant: number of moles: What is the concentration of the excess reagent after reaction? concentration: What are the moles of the pH active product after reaction? (remember the spectator ion is not pH active) moles