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一、理论依据酸碱中和过程中,无论酸碱的强弱,无论酸碱能否完全反应,混合溶液中离子的种类是固定的,电荷守恒式是相同的.醋酸溶液中滴加氢氧化钾溶液的电荷守恒式为:c(K~+)+c(H~+)=c(CH_3COO~-)+c(OH~-),随着氢氧化钾溶液的滴入,发生反应:CH_3COOH+KOH=CH_3COOK+H_2O,K+和OH~-浓度在增大,H~+浓度在减小,CH_3COO~-的浓度在恰好中和之前是增
First, the theoretical basis of acid-base neutralization process, regardless of the strength of acid and alkali, regardless of whether the complete reaction of acid and alkali, the type of ions in the mixed solution is fixed, the charge conservation is the same. Potassium solution charge conservation formula is: c (K ~ +) + c (H ~ +) = c (CH_3COO ~ -) + c (OH ~ -), with the instillation of potassium hydroxide solution, the reaction occurs: CH_3COOH +KOH=CH_3COOK+H_2O, K+ and OH~- concentrations increase, H~+ concentration decreases, and CH_3COO~- concentration increases just before neutralization