What is the concentration of [H^+] in mol/L i | vedclass

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(A) The solution is a buffer solution consisting of a weak acid $(CH_3COOH)$ and its salt with a strong base $(CH_3COONa)$.Using the Henderson-Hasselb

Vedclass · Accepted Answer

$9.0 	imes 10^{-6}$

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(A) The solution is a buffer solution consisting of a weak acid $(CH_3COOH)$ and its salt with a strong base $(CH_3COONa)$.Using the Henderson-Hasselbalch equation for $[H^+]$:$[H^+] = K_a 	imes \frac{[Acid]}{[Salt]}$Given:$K_a = 1.8 	imes 10^{-5}$$[Acid] = [CH_3COOH] = 0.10 \ M$$[Salt] = [CH_3COONa] = 0.20 \ M$Substituting the values:$[H^+] = 1.8 	imes 10^{-5} 	imes \frac{0.10}{0.20}$$[H^+] = 1.8 	imes 10^{-5} 	imes 0.5$$[H^+] = 0.9 	imes 10^{-5} = 9.0 	imes 10^{-6} \ M$

What is the concentration of $[H^+]$ in $mol/L$ in a mixed solution of $0.20 \ M \ CH_3COONa$ and $0.10 \ M \ CH_3COOH$? (Given: $K_a$ of $CH_3COOH = 1.8 \times 10^{-5}$)

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