A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weights out...

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Chemistry

A chemistry student needs to standardize a fresh solution ofsodium hydroxide. She carefully weights out 305.mg of oxalicacid(H2C2O4), a diprotic acid that can be purchased inexpensivelyin high purity, and dissolves it in 250.mL of distilled water. Thestudent then titrates the oxalic acid solution with her sodiumhydroxide solution. When the titration reaches the equivalencepoint, the student finds she has used 69.4mL of sodium hydroxidesolution. Calculate the molarity of the student's sodium hydroxidesolution. Be sure your answer has the correct number of significantdigits.

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3.8 Ratings (428 Votes)

Given mass of oxalic acid is 305 mg 305x103 gMolar mass of oxalic acid H2C2O4 2x1 2x124x16 90gmolSo number of moles of oxalic acid n mass molar mass See Answer

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