When 100 mL of 0.4 M `CH_3COOH` are mixed with 100 mL of 0.2 NaOH, the `[H_3O^+]` in the solution is approximately : `[K_a(CH_3C

When 100 mL of 0.4 M `CH_3COOH` are mixed with 100 mL of 0.2 NaOH, the `[H_3O^+]` in the solution is approximately : `[K_a(CH_3COOH)=1.8xx10^(-5)]`
A. `1.8xx10^(-6) M`
B. `1.8xx10^(-5) M`
C. `9xx10^(-6) M`
D. `9xx10^(-5) M`

When 100 mL of 0.4 M `CH_3COOH` are mixed with 100 mL of 0.2 NaOH, the `[H_3O^+]` in the solution is approximately : `[K_a(CH_3COOH)=1.8xx10^(-5)]`

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