15问答网 > 分析化学 有几个滴定突跃范围，为什么？

分析化学 有几个滴定突跃范围，为什么？

2025-03-14 17:33:40
推荐回答（1个）
回答1：

【】可以以0.1 000 mol/L氢氧化钠滴定0.1000 mol/L 盐酸 20.00 ml，计算突跃范围： 1、滴定至99.9%的等当点前：盐酸剩余[H+]= （20.00 -19.98）/39.98]x0.1000 = 5.00x10^-5 ∴ pH = 4.30 2、滴定至100.1%氢氧化钠过量[OH-]= （20.02 -20.00）/40.02]x0.1000 = 5.00x10^-5 ∴ pH= 9.7 0 3、突跃范围：pH = 4.30~ 9.7 0

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