M A solution is prepared by dissulving 4.3829 g of g barium hydroxide in 500.0 mL volumetric flask and diluting it to the calibration mark. Calculate the: Ba(OH)2 i) Normality of the Ba(OH)2 solution. (0.1024)
ii) Concentration (ppm) of OH-ion in the solution. (4 marks)

did someone know how todo ques (ii). for the (i) i got 0.1024.

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Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used 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.

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