50 ml of 1 M oxalic acid is shaken with 0.5g wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid adsorbed per gm of carbon ?

MOxalic acid =Minitial -Mfinal=wGmwX1000Vml 1-0.5 =w126×100050Gmw of oxallic acid is 126, it existed as hydrated crystalw=3.15 gm of oxalic acid3.15 gm oxalic acid adsorb on 0.5 gm of  carbon(x=?)←←←←←adsorb on 1 gm of carbonx=10.5×3.15 =6.30 gm