The hydrogen ion concentration of a solution of which is dissociated is: — Ionic Equilibrium Chemistry Question
Question
The hydrogen ion concentration of a $0.2 \text{ N}$ solution of $CH_3COOH$ which is $40\%$ dissociated is:
Answer: B
💡 Solution & Explanation
The concentration of $H^+$ ions provided by a weak monoprotic acid is given by $[H^+] = C\alpha$. Given $C = 0.2 \text{ N}$ and $\alpha = 40\% = 0.4$, $[H^+] = 0.2 \times 0.4 = 0.08 \text{ N}$.
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