In a titration of unknown triprotic acid, H3A, 63.5 mL of 0.556 M calcium hydroxide are needed to neutralize 25.0 mL of the acid. Which is the balanced chemical reaction for this process? Note that A represents any anion with -3 charge. О 2НЗА(aq) + 3Саa(ОН)2(aq) — Саз А2(ag) + 6H20(0 НзА(ag) + 3CаОН(aq) — зСаА(aq) + зн200 НзА(аq) + CаOH(aq) — СаА (аq) + H20Ф H3A(aq) + Ca(OH)2(aq) → CaA2(aq) + H20(1) HзА(ag) + Ca(ОН)2(ag) — Саз А2(aq) + H200

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for