Chapter 16, Problem 16.66QP

Interpretation Introduction

Interpretation:

Which of the given statements are true regarding a 0.10-M solution of a weak acid $\text{HA}$ has to be explained.

Concept Information:

Strong acids:

In strong acids, the ionization of acid is complete.  This implies that the concentration of the hydrogen ion or hydronium ion will be equal to the initial concentration of the acid at equilibrium.

Weak acids:

In weak acids, the ionization of acid is not complete.  This implies that the concentration of the hydrogen ion or hydronium ion will not  be equal to the initial concentration of the acid at equilibrium.

For strong acids the concentration of acid will be same as that of the concentration of hydrogen ions, because strong acids undergo complete ionization.

In case of weak acid, the concentration of hydrogen ion will be less than the concentration of given acid; since weak acid does not ionize completely.

Strong acids have low $\text{pH}$ value whereas weak acids have high $\text{pH}$ value