Question

We dissolve 2.77 g of an unknown acid, HA, in enough water to produce 25.0 mL of solution. The pH of this solution of HA(aq) is 1.33. We titrate this solution with a 0.250 M solution of NaOH. It takes 42.2 mL of the NaOH solution to reach the equivalence point. (a) (2 points) What is the molar mass of HA? (b) (2 points) What is the pKa value of HA(aq)? (c) (2 points) What is the pH at the equivalence point? (d) (2 point) What is the pH one third along the titration when you still have twice as much HA(aq) as A-(aq)?

Answer 1

Sry but I need points