A dilute solution of an unknown weak monoprotic acid (HX) required a 28.62 mL titration of 0.1084 M NaOH to reach the phenolphthalein endpoint. The titrated solution was evaporated into dryness. Calculate the equivalent mass (g/mol) of the acid if the sodium salt was found to weigh exactly 0.4139 -g. (Atomic Mass of Na = 22.99 g/mol; Atomic Mass of H = 1.008 g/mol). HX + NaOH ---> NaX + H2O
A dilute solution of an unknown weak monoprotic acid (HX) required a 28.62 mL titration of 0.1084 M NaOH to reach the phenolphthalein endpoint. The titrated solution was evaporated into dryness. Calculate the equivalent mass (g/mol) of the acid if the sodium salt was found to weigh exactly 0.4139 -g. (Atomic Mass of Na = 22.99 g/mol; Atomic Mass of H = 1.008 g/mol). HX + NaOH ---> NaX + H2O
Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.28QAP
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A dilute solution of an unknown weak monoprotic acid (HX) required a 28.62 mL titration of 0.1084 M NaOH to reach the phenolphthalein endpoint. The titrated solution was evaporated into dryness. Calculate the equivalent mass (g/mol) of the acid if the sodium salt was found to weigh exactly 0.4139 -g. (
HX + NaOH ---> NaX + H2O
Express you answer with 2 decimal places
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