Ionic Equilibrium

Question

The pH of a 0.01 M solution of HCl is:

RankGuru · Accepted Answer

**Hydrogen chloride ($HCl$)** is a strong acid that undergoes complete ionization in aqueous solution.
$HCl(aq) 	o H^+(aq) + Cl^-(aq)$
- Concentration of acid $[HCl] = 0.01 	ext{ M} = 10^{-2} 	ext{ M}$.
- Since it is monoprotic and strong, $[H^+] = [HCl] = 10^{-2} 	ext{ M}$.
- Definition: **$pH = -\log[H^+]$**
$pH = -\log(10^{-2}) = 2$.
- The solution is acidic.

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Ionic Equilibrium

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