Chapter 22, Problem 30R

To determine

To Choose: The correct option.

Explanation of Solution

Introduction: Strong acids dissociates completely in water, whereas, weak acids dissociates only partially.

Acids which dissociate almost completely in aqueous solutions thus producing a large number of ${\text{H}}^{+}$ ions are called strong acids, such as $\text{HCl}$ , ${\text{H}}_2{\text{SO}}_4$ , and ${\text{HNO}}_3$ .

Acids which dissociate to a small extent at ordinary dilution to give low concentration of ${\text{H}}^{+}$ ions are called weak acids, such as ${\text{HC}}_2{\text{H}}_3{\text{O}}_2$ .

Conclusion: ${\text{HC}}_2{\text{H}}_3{\text{O}}_2$ ionizes only partially in water. Option D.