Question- part 1 a 0030 m solution was prepared by, Chemistry

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Question- part 1 a 0030 m solution was prepared by

Question- Part 1) A 0.030 M solution was prepared by dissolving dipotassium cysteine, K2C, in water. Then 40.0mL of this solution was titrated with 0.060 M HClO4.

Calculate the pH at the first equivalence point.

Part 2) Calculate the quotient [C^2-]/[HC^-] in a solution of 0.050 M cysttainium bromide.

(amino acid cystein abbreviated as H2C)
Answer for part 1 is 9.54 and part 2 is 7.9x10^-10

Please define why you think that's the right answer

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