Chapter 11, Problem 11.30P

(a)

Interpretation Introduction

Interpretation:

In the titration of cysteine with perchloric acid the $pH$ at first equivalence point has to be determined.

Concept introduction:

Acid-base titration is titration between acid and base. It is also known as neutralization reaction.

There are primarily four types of acid-base titrations –

• Strong base vs strong acid
• Strong base vs weak acid
• Weak base vs strong acid
• Weak base vs weak acid

The term $pH$ refers to concentration of $H^{+}$ion in a solution.

(b)

Interpretation Introduction

Interpretation:

The quotient $[C^{2-}]/[H{C}^{-}]$ in a solution of cysteinium bromide salt has to be calculated.