Identify the acid or base behavior of each substance in these reactions: $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ + $\mathrm { Cl } ^ { - }$ ? $\mathrm { H } _ { 2 }$ O + HCl
A) $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ acts as an acid, $\mathrm { Cl } ^ { - }$ acts as a base, $\mathrm { H } _ { 2 }$ O acts an acid,HCl acts as a base.
B) $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ acts as an base, $$\mathrm { Cl } ^ { - }$$ acts as a acid, $$\mathrm { H } _ { 2 }$$ O acts an acid,HCl acts as a base.
C) $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ acts as an acid, $\mathrm { Cl } ^ { - }$ acts as a base, $\mathrm { H } _ { 2 }$ O acts an base,HCl acts as a acid.
D) $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ acts as an base, $\mathrm { Cl } ^ { - }$ acts as a acid, $\mathrm { H } _ { 2 }$

Question

Quizplus · Accepted Answer

$\mathrm{H}_3\mathrm{O}^+$ donates a proton (H+) to $\mathrm{Cl}^-$, acting as an acid, while $\mathrm{Cl}^-$ accepts a proton, acting as a base. In the reverse reaction, $\mathrm{H}_2\mathrm{O}$ donates a proton to HCl, acting as a base, and HCl donates a proton, acting as an acid.

Identify the Acid or Base Behavior of Each Substance in These