9. Polyprotic Acid-Base Equilibria

Diprotic Acids and Bases

9. Polyprotic Acid-Base Equilibria

# Diprotic Acids and Bases

**Diprotic species** involve the movement of two acidic hydrogens.Â

Diprotic Acids and Bases

1

concept

## Diprotic Acids

2m

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2

concept

## Diprotic Bases

2m

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3

concept

## Diprotic Dissociation Constants

6m

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Diprotic Acids and Bases Calculations

4

example

## Diprotic Acids and Bases Calculations 1

13m

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5

example

## Diprotic Acids and Bases Calculations 1

5m

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6

example

## Diprotic Acids and Bases Calculations 2

4m

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7

Problem

ProblemAn unknown diprotic acid has an initial concentration of 0.025 M. What is the pH of the solution if pka_{1} is 3.25 and pKa_{2} is 6.82?

A

4.21

B

2.46

C

1.91

D

3.25

E

2.79