3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06 N) in a flask. After an hour it was filtered and strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is:
(1) 18 mg
(2) 36 mg
(3) 42 mg
(4) 54 mg

Question

Accepted Answer

18 mg. The amount of acetic acid adsorbed is calculated by determining the difference in normality before and after adsorption, which indicates how much was removed by the charcoal. In this case, the decrease from 0.06 N to 0.042 N shows that 0.018 N of acetic acid was adsorbed, and when converted to mass per gram of charcoal, it results in 18 mg per gram.

3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06 N) in a flask. After an hour it was filtered and strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is: (1) 18 mg (2) 36 mg (3) 42 mg (4) 54 mg

Solution

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