You decide to titrate the solution of naoh using oxalic acid as a primary standard and phenolphthalein as the indicator. in the reaction of oxalic acid with naoh, every 1 mole of oxalic acid is deprotonated by 2 moles of naoh. the molecular weight of oxalic acid is 90.03 g/mol and you use 0.60 g in 50 ml water for the titration. you use 15.20 ml of your naoh solution in order to reach the endpoint of the titration. what is the concentration of your naoh solution?