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Acid–Base Titration
pH Changes in Strong Acid-Base Titration
Description
pH changes in a strong acid-strong base titration depend on the amount of leftover hydronium or hydroxide ions. A strong acid such as hydrochloric acid fully dissociates in water. That gives the solution hydronium ions and chloride ions, so the starting pH is low.
When sodium hydroxide is added, ...
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Transcript
在用强碱滴定强酸的过程中,pH 的计算基于剩余的 H3O+ 或 OH− 离子浓度。
例如,0.1 M HCl 会解离成 0.1 M H3O+ 和 Cl− 离子,起始 pH 值约为 1。
加入0.1 M NaOH会改变溶液中H3O+的浓度。新的浓度可通过从H3O+的总摩尔数中减去OH−的总摩尔数,再除以总体积来计算。此时,溶液的pH值已上升至1.48。
持续加入 NaOH 溶液可中和所有的 H3
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