Adsorption is the presence of excess concentration of any particular component at the surface of liquid a solid phase as compared to bulk.This is due to presence of residual forces at the surface of body.In the adsorption of hydrogen gas over a sample of charcoal, 1.12cm^3 of H_2(g) measured over S.T.P was found to absorb per gram of charcoal.Consider only monolayer adsorption.Density of H_2 is 0.07gm/cc. In another experiment same 1 gm charcoal adsorbs 100 ml of 0.5M CH_3COOH to form monolayer and thereby the molarity of CH_3COOH reduces to 0.49. ((3xx47.43)/(4pi))^(1//3)=2.24 (2.24)^2=5 Number of molecules of hydrogen over 1 gram charcoal are-

Adsorption is the presence of excess concentration of any particular c

1.	Adsorption is the presence of excess concentration of any particular component at the surface of liquid a solid phase as compared to bulk.This is due to presence of residual forces at the surface of body.In the adsorption of hydrogen gas over a sample of charcoal, 1.12cm^3 of H_2(g) measured over S.T.P was found to absorb per gram of charcoal.Consider only monolayer adsorption.Density of H_2 is 0.07gm/cc. In another experiment same 1 gm charcoal adsorbs 100 ml of 0.5M CH_3COOH to form monolayer and thereby the molarity of CH_3COOH reduces to 0.49. ((3xx47.43)/(4pi))^(1//3)=2.24 (2.24)^2=5 Number of molecules of hydrogen over 1 gram charcoal are-
Answer» `3.01xx10^(18)` `3.01xx10^(19)` `3.01xx10^(21)` `3.01xx10^(22)` Solution :VOLUME of `H_2` over 1 gm charcoal `=1.12 cm^2` at STP mole of `H_2=1.12/22400=5xx10^(-5)` mole Number of molecules of `H_2=5xx10^(-5)xx6.023xx10^(23)=3.01xx10^19` molecules