The pK a of CH 3 COOH is 4.8 . If the pH of an aqueous solution of CH 3 COOH CH 3 COO - is 4.8, then one knows ________.

When the pH of the solution equals the pKa of the acid (in this case, acetic acid, CH3COOH), it indicates that the concentrations of the acid and its conjugate base (CH3COO-) are equal.

The pK a of CH 3 COOH is 4.8 . If the pH of an aqueous solution of CH 3 COOH CH 3 COO - is 4.8, then one knows ________.

When the pH of the solution equals the pKa of the acid (in this case, acetic acid, CH3COOH), it indicates that the concentrations of the acid and its conjugate base (CH3COO-) are equal.

Solved

The PK_a of CH₃COOH Is 4 $\left[ \mathrm { CH } _ { 3 } \mathrm { COOH } \right] > \left[ \mathrm { CH } _ { 3 } \mathrm { COO } ^ { - } \right]$

Question 35

Multiple Choice

The pK_a of CH₃COOH is 4.8 . If the pH of an aqueous solution of CH₃COOH CH₃COO^-is 4.8, then one knows ________.

A) CH₃COOH is completely ionized
B) $\left[ \mathrm { CH } _ { 3 } \mathrm { COOH } \right] > \left[ \mathrm { CH } _ { 3 } \mathrm { COO } ^ { - } \right]$
C) $\left[ \mathrm { CH } _ { 3 } \mathrm { COOH } \right] = \left[ \mathrm { CH } _ { 3 } \mathrm { COO } ^ { - } \right]$
D) $\left[ \mathrm { CH } _ { 3 } \mathrm { COOH } \right] < \left[ \mathrm { CH } _ { 3 } \mathrm { COO } ^ { - } \right]$
E) $\mathrm { CH } _ { 3 } \mathrm { COOH }$ is completely unionized