A 300mL water sample has an initial pH of 10. 40mL of 0.02 NH2SO4 were required to titrate the water sample to pH 4.5
a) What is the total alkalinity of water in mg/L as CaCO3?
b) Determine the species and the quantity of each of the species if the pH 8.3 equivalent point is reached after adding 15mL of acid.