Question

`3g` of actived chacoal was added to 50mL of acetic acid solution `(0.06N)` in a flask. After an hour it was filterred and the strength of the filtrate was found to be `0.042N` . The amount of acetic adsorbed (per gram of charcoal) is:
A. `18 mg`
B. `36 mg`
C. `42 mg`
D. `54 mg`

Answer 1

Correct Answer - D
Given, initial strength of acetic acid `= 0.06 N`
Final strength `= 0.042 N`, Volume `= 50 mL`
`:.` Initial millimoles of `CH_(3)COOH = 0.06 xx 50 = 3`
Final millimoles of `CH_(3)COOH` adsorbed `= 3-2.1 = 0.9 mmol = 0.9 xx 60 mg = 54 mg`