Question

Identify $\text{base}_2$ for the following equation according to Br\o{}nsted--Lowry theory: \[HCl_{(aq)} + H_2O_{(l)} \rightleftharpoons H_3O^+_{(aq)} + Cl^-_{(aq)}\]}

• A. $H_3O^+_{(aq)}$
• B. $H_2O_{(l)}$
• C. $Cl^-_{(aq)}$
• D. $HCl_{(aq)}$

Hint:

Conjugate acid--base pairs always differ by exactly one $H^+$ ion. Acid $\rightarrow$ Base$_2$ (loses $H^+$); Base $\rightarrow$ Acid$_2$ (gains $H^+$).

Answer 1

The Correct Option is C