Assuming your unknown is 50% KHP, calculate the approximate mass of the unknown that should be used to require 15 ml of your standardized NaOH to titrate to the endpoint.
a) Determine the molarity of the NaOH solution
b) Use the given 50% khp unknown to calculate the amount needed to require 15 ml of NaOH
c) Convert the amount of khp unknown to grams using its molar mass
d) Calculate the approximate mass of the unknown that should be used