Question

A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs out 201.mg of oxalic acid H2C2O4 , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in 250.mL of distilled water. The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 63.0mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide solution. Be sure your answer has the correct number of significant digits.

Answer 1

2 mo ) So 2 moles NaoH are heqed for comple*e urabson One mole oxalic aid iven, 20l mg distilled waer onala aid 90 03 3 mel 1 3 Moles of oxalic aud in 20l m20737 Moles 3

9 noloty an bechfeindoleviding mole volumem L '. Mo lar (6.3을) L