The pH of a dilute solution of acetic acid was found to be 4.3 . The addition of a small crystal of sodium acetate will cause pH to:

Question

The pH of a dilute solution of acetic acid was found to be 4.3 . The addition of a small crystal of sodium acetate will cause pH to: (A) Become less than 4.3 (B) Become more than 4,3 (C) Remains equal to 4.3 (D) Unpredictable

Tardigrade Admin · Accepted Answer

CH 3 COONa being strong electrolyte ionizes into CH 3 COO - and Na + ions and it suppresses the ionization of CH 3 COOH ( CHCOOH leftharpoons CH 3 COO -+ H +) thereby decreasing the H + ion concentration. This could increase pH to beyond 4.3

Q. The $p H$ of a dilute solution of acetic acid was found to be $4.3.$ The addition of a small crystal of sodium acetate will cause $p H$ to:

Become less than 4.3

Become more than 4,3

Remains equal to 4.3

Unpredictable

$C H_{3} COON a$ being strong electrolyte ionizes into $C H_{3} CO O^{-}$ and $N a^{+}$ ions and it suppresses the ionization of $C H_{3} COO H$

$(C H COO H ⇌ C H_{3} CO O^{-} + H^{+})$

thereby decreasing the $H^{+}$ ion concentration. This could increase $p H$ to beyond 4.3

Q. The pH of a dilute solution of acetic acid was found to be 4.3. The addition of a small crystal of sodium acetate will cause pH to: