Calculate the pH of a solution containing () and . — Ionic Equilibrium Chemistry Question
Question
Calculate the pH of a solution containing $0.1 \text{ M } HA$ ($K_a = 10^{-5}$) and $0.1 \text{ M } HCl$.
Answer: C
💡 Solution & Explanation
Strong acid entirely dictates the pH. The weak acid is heavily suppressed by the common $H^+$ ion. Total $[H^+] \approx [HCl] = 0.1 \text{ M}$. $pH = -\log(0.1) = 1.0$.
💬Ask on WhatsApp →
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes