1.

3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042N. The amont of acetic acid absorbed (pr gram of charcoal) is

Answer»

42 MG
54 mg
18 mg
36 mg

Solution :Milleq of acetic acid present initially `=0.06xx60=3`
millieq of acetic acid left after adsorption
`=0.042xx50=2.1`
`THEREFORE` millieq of acetic acid adsorbed by 3 g of charcoal
`=3-2.1=0.9meq=0.9xx60 mg=54mg`
`therefore` Amount of acetic acid adsorbed per GRAM of charcoal `=54/3=18` mg


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