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ChemistryInteger+4 / -1Question 85 of 90

JEE Main 2022 · 24 Jun · Shift 2, Chemistry question 85

When 200 mL of 0.2 M acetic acid is shaken with 0.6 g of wood charcoal, the final concentration of acetic acid after adsorption is 0.1 M. The mass of acetic acid adsorbed per gram of carbon is ______ g.

Answer and worked solution

Official answer: 2

Adsorbed. 0.2 L×(0.2−0.1)0.2\ \mathrm L\times(0.2-0.1) M =0.02=0.02 mol =0.02×60=1.2=0.02\times60=1.2 g of acetic acid.

Per gram of charcoal. 1.20.6=2\dfrac{1.2}{0.6}=2 g.

Answer: 2

Topics:AdsorptionConcentration terms
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