Adsorption
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CHXII05:SURFACE CHEMISTRY

320634 During adsorption

1 \({\rm{T}}\,{\rm{\Delta }}\,{\rm{S}}\) is positive
2 \({\rm{\Delta H - T\Delta S}}\) is negative
3 \({\rm{\Delta H}}\) is positive
4 \({\rm{T\Delta S}} \,{\rm{and}}\,{\rm{\Delta G}}\) becomes zero
CHXII05:SURFACE CHEMISTRY

320635 During the adsorption of a gas on the surface of a solid, which of the following is true?

1 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{S} < 0\)
2 \(\Delta \mathrm{G}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
3 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
4 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S}>0\)
KCET - 2012
CHXII05:SURFACE CHEMISTRY

320636 Adsorption is always

1 Endothermic
2 Exothermic
3 Accompanies with increase in entropy
4 Accompanies with increase of enthalpy
CHXII05:SURFACE CHEMISTRY

320637 5 g of solid adsorbent is dropped in a container of \({\mathrm{1.5 \mathrm{~L} \mathrm{~N}_{2}}}\) gas at 1 atm and 300 K . The pressure of \({\mathrm{\mathrm{N}_{2}}}\) is reduced to \({\mathrm{20 \%}}\). The mass of nitrogen (in g ) adsorbed per gram of adsorbent is ____ .
[Given: \({\mathrm{\mathrm{R}=0.08 \mathrm{~L} . \mathrm{atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}}}\) ]

1 0.28
2 1.4
3 2.8
4 0.14
CHXII05:SURFACE CHEMISTRY

320638 Which of the following is not a characteristic of chemisorption?

1 Increases with increase of surface area
2 Specific in nature
3 \({\rm{\Delta H}}\) is of the order of \(500 \mathrm{~J}\)
4 Irreversible nature
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CHXII05:SURFACE CHEMISTRY

320634 During adsorption

1 \({\rm{T}}\,{\rm{\Delta }}\,{\rm{S}}\) is positive
2 \({\rm{\Delta H - T\Delta S}}\) is negative
3 \({\rm{\Delta H}}\) is positive
4 \({\rm{T\Delta S}} \,{\rm{and}}\,{\rm{\Delta G}}\) becomes zero
CHXII05:SURFACE CHEMISTRY

320635 During the adsorption of a gas on the surface of a solid, which of the following is true?

1 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{S} < 0\)
2 \(\Delta \mathrm{G}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
3 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
4 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S}>0\)
KCET - 2012
CHXII05:SURFACE CHEMISTRY

320636 Adsorption is always

1 Endothermic
2 Exothermic
3 Accompanies with increase in entropy
4 Accompanies with increase of enthalpy
CHXII05:SURFACE CHEMISTRY

320637 5 g of solid adsorbent is dropped in a container of \({\mathrm{1.5 \mathrm{~L} \mathrm{~N}_{2}}}\) gas at 1 atm and 300 K . The pressure of \({\mathrm{\mathrm{N}_{2}}}\) is reduced to \({\mathrm{20 \%}}\). The mass of nitrogen (in g ) adsorbed per gram of adsorbent is ____ .
[Given: \({\mathrm{\mathrm{R}=0.08 \mathrm{~L} . \mathrm{atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}}}\) ]

1 0.28
2 1.4
3 2.8
4 0.14
CHXII05:SURFACE CHEMISTRY

320638 Which of the following is not a characteristic of chemisorption?

1 Increases with increase of surface area
2 Specific in nature
3 \({\rm{\Delta H}}\) is of the order of \(500 \mathrm{~J}\)
4 Irreversible nature
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CHXII05:SURFACE CHEMISTRY

320634 During adsorption

1 \({\rm{T}}\,{\rm{\Delta }}\,{\rm{S}}\) is positive
2 \({\rm{\Delta H - T\Delta S}}\) is negative
3 \({\rm{\Delta H}}\) is positive
4 \({\rm{T\Delta S}} \,{\rm{and}}\,{\rm{\Delta G}}\) becomes zero
CHXII05:SURFACE CHEMISTRY

320635 During the adsorption of a gas on the surface of a solid, which of the following is true?

1 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{S} < 0\)
2 \(\Delta \mathrm{G}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
3 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
4 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S}>0\)
KCET - 2012
CHXII05:SURFACE CHEMISTRY

320636 Adsorption is always

1 Endothermic
2 Exothermic
3 Accompanies with increase in entropy
4 Accompanies with increase of enthalpy
CHXII05:SURFACE CHEMISTRY

320637 5 g of solid adsorbent is dropped in a container of \({\mathrm{1.5 \mathrm{~L} \mathrm{~N}_{2}}}\) gas at 1 atm and 300 K . The pressure of \({\mathrm{\mathrm{N}_{2}}}\) is reduced to \({\mathrm{20 \%}}\). The mass of nitrogen (in g ) adsorbed per gram of adsorbent is ____ .
[Given: \({\mathrm{\mathrm{R}=0.08 \mathrm{~L} . \mathrm{atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}}}\) ]

1 0.28
2 1.4
3 2.8
4 0.14
CHXII05:SURFACE CHEMISTRY

320638 Which of the following is not a characteristic of chemisorption?

1 Increases with increase of surface area
2 Specific in nature
3 \({\rm{\Delta H}}\) is of the order of \(500 \mathrm{~J}\)
4 Irreversible nature
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CHXII05:SURFACE CHEMISTRY

320634 During adsorption

1 \({\rm{T}}\,{\rm{\Delta }}\,{\rm{S}}\) is positive
2 \({\rm{\Delta H - T\Delta S}}\) is negative
3 \({\rm{\Delta H}}\) is positive
4 \({\rm{T\Delta S}} \,{\rm{and}}\,{\rm{\Delta G}}\) becomes zero
CHXII05:SURFACE CHEMISTRY

320635 During the adsorption of a gas on the surface of a solid, which of the following is true?

1 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{S} < 0\)
2 \(\Delta \mathrm{G}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
3 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
4 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S}>0\)
KCET - 2012
CHXII05:SURFACE CHEMISTRY

320636 Adsorption is always

1 Endothermic
2 Exothermic
3 Accompanies with increase in entropy
4 Accompanies with increase of enthalpy
CHXII05:SURFACE CHEMISTRY

320637 5 g of solid adsorbent is dropped in a container of \({\mathrm{1.5 \mathrm{~L} \mathrm{~N}_{2}}}\) gas at 1 atm and 300 K . The pressure of \({\mathrm{\mathrm{N}_{2}}}\) is reduced to \({\mathrm{20 \%}}\). The mass of nitrogen (in g ) adsorbed per gram of adsorbent is ____ .
[Given: \({\mathrm{\mathrm{R}=0.08 \mathrm{~L} . \mathrm{atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}}}\) ]

1 0.28
2 1.4
3 2.8
4 0.14
CHXII05:SURFACE CHEMISTRY

320638 Which of the following is not a characteristic of chemisorption?

1 Increases with increase of surface area
2 Specific in nature
3 \({\rm{\Delta H}}\) is of the order of \(500 \mathrm{~J}\)
4 Irreversible nature
Join With Us for More Updates
CHXII05:SURFACE CHEMISTRY

320634 During adsorption

1 \({\rm{T}}\,{\rm{\Delta }}\,{\rm{S}}\) is positive
2 \({\rm{\Delta H - T\Delta S}}\) is negative
3 \({\rm{\Delta H}}\) is positive
4 \({\rm{T\Delta S}} \,{\rm{and}}\,{\rm{\Delta G}}\) becomes zero
CHXII05:SURFACE CHEMISTRY

320635 During the adsorption of a gas on the surface of a solid, which of the following is true?

1 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{S} < 0\)
2 \(\Delta \mathrm{G}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
3 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S} < 0\)
4 \(\Delta \mathrm{G} < 0, \Delta \mathrm{H} < 0, \Delta \mathrm{S}>0\)
KCET - 2012
CHXII05:SURFACE CHEMISTRY

320636 Adsorption is always

1 Endothermic
2 Exothermic
3 Accompanies with increase in entropy
4 Accompanies with increase of enthalpy
CHXII05:SURFACE CHEMISTRY

320637 5 g of solid adsorbent is dropped in a container of \({\mathrm{1.5 \mathrm{~L} \mathrm{~N}_{2}}}\) gas at 1 atm and 300 K . The pressure of \({\mathrm{\mathrm{N}_{2}}}\) is reduced to \({\mathrm{20 \%}}\). The mass of nitrogen (in g ) adsorbed per gram of adsorbent is ____ .
[Given: \({\mathrm{\mathrm{R}=0.08 \mathrm{~L} . \mathrm{atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}}}\) ]

1 0.28
2 1.4
3 2.8
4 0.14
CHXII05:SURFACE CHEMISTRY

320638 Which of the following is not a characteristic of chemisorption?

1 Increases with increase of surface area
2 Specific in nature
3 \({\rm{\Delta H}}\) is of the order of \(500 \mathrm{~J}\)
4 Irreversible nature