The mass percent of chloride ion in a 25.00 mL sample of seawater was determined by titrating the sample with silver nitrate, causing precipitation of silver chloride. It requires 42.58 mL of 0.2997 M silver nitrate solution to reach the equivalence point. 25. Write a balanced chemical equation for the reaction that occurs. 26. What is the mass % of chloride ion in the water (density of the solution is 1.025 g/mL)?

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