pH ofpH of pH of Base 1 Base 2Base 3 1062 1097 1112 1147 116

pH ofpH of pH of Base 1 Base 2Base 3 10.62 10.97 11.12 11.47 11.63 Concentration pH ofp 0.010 0.050 0.10 0.50 1.00 11.00 11.70 12.00 12.70 13.00 8.38 8.72 8.88 9.22 9.38 Base 4 11.28 11.65 11.81 12.18 12.33 The pH of solutions of four bases prepared at various concentrations were measured and recorded in the table above. The four bases are, in no particular order, ammonia, sodium hydroxide, methyl amine, and potassium acetate,

Solution

21. Answer is Base 2, because of Strong acids will neutralize strong bases of equal concentrations in equal amounts. less volume of a weak base is needed to neutralize a strong acid if the concentrations are equal.

22. Answer is A. The pH of resulting solution increses because of KOH is strong base.