Adsorpton of gases on solid surface is generally exothermic because :A – InterviewSolution

InterviewSolution

1.	Adsorpton of gases on solid surface is generally exothermic because :A. Enthalpy is positiveB. Entropy decreasesC. Entropy increasesD. Free energy increases
Answer» Correct Answer - B When a gas is adsorbed on the surface, the freedom of movement of its molecules becomes restricted. This causes decrease in the entropy of the gas after adsorption, i.e, `DeltaS` becomes negative.

Discussion

No Comment Found

Related InterviewSolutions

The blue colour of the sky is duo toA. scattering of light due to the ozone layerB. scattering of light from the sunC. scattering of light from particles of dust in the atmosphereD. all of these
How do micelles differ from a normal colloidal solutions ?
Peptization is a process of :A. precipitation of colloidal particlesB. purification of colloidsC. dispersing precipitate into colloidal solsD. movement of colloidal particles in the electrical field
peptization involves :A. precipitation of colloidal particlesB. disintegration of colloidal aggregatesC. purifiction of colloidsD. impact of molecules of the dispersion medium on the colloidal particles
Peptization is a process of :A. precipitating colloidal particlesB. purifying colloidal particlesC. dispersing the precitiate into colloidal stateD. none of these
Substances that form aggerated particles (micelles) at higher concentration are known asA. associated colloidsB. lyophilic colloidsC. multimolecular colloidsD. lyophobic colloids
What is Peptization ?
What is meant by the term peptization?
What are miclells? How do they differ from ordianry cordinary colloidal particles? Give two examples of micelles-forming substances.
State Hardy schulze rule.