Let an n-protic acid be an acid that can donate n hydrogen ions and has the formula HnX. If 0.900 L of 0.400 M sodium hydroxide is required to titrate 0.400 L of a 0.300 M HnX to the equivalence point, what is n in HnX? A. 1 B. 2 C. 3 D. 4 E. 5

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