A) A 0.030 M solution was prepared by dissolving dipotassium cysteine K2C in water. After that 40.0mL of this solution was titrated with 0.060 M HClO4.
Compute the pH at the first equivalence point.
B) Compute the quotient [C2-]/[HC-] in a solution of 0.050 M cysttainium bromide.
(Amino acid cystein abbreviated as H2C)