100 mL of 0.3 M acetic acid is shaken with 0.8 g wood charcoal. The final concentration of acetic acid in the solution after adsorption is 0.125 M. The mass of acetic acid adsorbed per gram of charcoal is :

Explanation

Step I. Amount of axalic acid initialy shaken
`(1 molL^(-1))=(W//126gmol^(-1))/(0.25L)or W (1molL^(-1))xx(0.05L)xx(123g mol^(-1))=6.3g`
Step II. Amount of axalic acid left after adsorption
`(0.5 molL^(-1))=(W//126gmol^(-1))/(0.25L), W (0.5molL^(-1))xx(126gmol^(-1))xx(0.05L)`
= 3.15 g
Step III, Calculation of amount of axalic acid adsobed per gram
Amount of oxalic acid adsorbed per 0.5 g of wood charcoal = (6.3- 3.15) = 3.15 g
Amount of oxalic acid adsorbed per 1.0 g of wood charcoal = `3.15xx2` = 6.30g