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 (integer)
2
Solution
Mass of wood charcoal $=0.6 \mathrm{~g}$ <br/><br/>Initial moles of acetic acid $=0.2 \times 0.2=0.04$<br/><br/> Final moles of acetic acid $\quad=0.1 \times 0.2=0.02$ <br/><br/>Moles of acetic acid adsorbed $=0.04-0.02 = 0.02$
<br/><br/>
Mass of acetic acid adsorbed per gm of charcoal
<br/><br/>
$=\frac{0.02 \times 60}{0.6}=2.0 \mathrm{~g}$
About this question
Subject: Chemistry · Chapter: Surface Chemistry · Topic: Adsorption
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