Some Basic Concepts of Chemistry - Result Question 13 — JEE PYQ Chapterwise

Answer:

Correct Answer: 16. (d)

Solution:

16. Given, initial strength of acetic acid $=0.06 \mathrm{~N}$ Final strength $=0.042 \mathrm{~N} ; \quad$ Volume $=50 \mathrm{~mL}$

$\therefore$ Initial millimoles of $\mathrm{CH}_3 \mathrm{COOH}=0.06 \times 50=3$

Final millimoles of $\mathrm{CH}_3 \mathrm{COOH}=0.042 \times 50=2.1$

$\therefore$ Millimoles of $\mathrm{CH}_3 \mathrm{COOH}$ adsorbed $=3-2.1=0.9 \mathrm{mmol}$

$=0.9 \times 60 \mathrm{mg}=54 \mathrm{mg}$