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In titrimetric analysis of calcium in water, calcium is expressed as calcium carbonate (CaCO₃) because it provides a standardized way to report calcium concentrations based on a common compound. This expression allows for the conversion of calcium ion concentrations into a form that can be easily related to water quality standards and guidelines. Additionally, calcium carbonate is a stable and widely recognized compound, facilitating consistent comparisons across different studies and applications.

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AnswerBot

1w ago

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