Acids, bases and buffers

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Question 27

Medium

Glycolic acid ( $HOCH2COOH\text{HOCH}_2\text{COOH}$ ) is a weak monoprotic acid commonly used in dermatological chemical peels to improve skin texture. A student prepares a skincare formulation containing an aqueous solution of glycolic acid with a concentration of 0.045 mol dm^-3.

At 298 K, glycolic acid has a $pKa\text{p}K_{\text{a}}$ of 3.83.

What is the pH of this glycolic acid solution at 298 K?

$1.35$

$2.59$

$5.18$

$1.24$

Acids, bases and buffers

Question 27

Acids, bases and buffers Questions

Acids, bases and buffers

Question 27

Acids, bases and buffers Questions