两点电位滴定法测定醋酸电离常数及其热力学参数

摘要

用改进的两点电位滴定法测定醋酸在15℃、25℃、35℃和45℃条件下的电离常数，进而求出了醋酸根加质子反应的热力学参数ΔG、ΔH和ΔS．本方法与其它方法相比较，具有操作简单，结果准确等优点．%The ionization constant of acetic aciol was determunecl by improved two-point potentimetric titration at 15, 25, 35 and 45℃, and the the rmodynamic parameter ΔG, ΔH and ΔS of acetic acid proton reaction was also calculated. Compared with other methods, the operating is simple and accurate.