10 Questions
What is the definition of adsorption in surface chemistry?
Accumulation of species on higher concentration on the surface of a substance due to intermolecular force is known as adsorption.
What is the enthalpy of adsorption?
The amount of heat energy liberated when one mole of gas is adsorbed on the unit surface area of adsorbent is known as enthalpy of adsorption.
What is the Van't Hoff equation for enthalpy of adsorption?
The Van't Hoff equation is given by $ln(rac{k}{p}) = -\frac{\Delta H^0}{RT} + \frac{c}{T}$.
Under what conditions is adsorption considered an exothermic process?
In the majority of cases, adsorption is an exothermic process, making it thermodynamically favorable.
What does a positive value of $\Delta H^0$ indicate in the context of adsorption?
A positive value of $\Delta H^0$ indicates an endothermic reaction, where the right-hand side of the Van't Hoff equation is positive.
Surface chemistry is the study of chemical phenomena that occur only at the interface of two solid surfaces.
False
The enthalpy of adsorption is the amount of heat energy absorbed when one mole of gas is adsorbed on the unit surface area of adsorbent.
False
According to the Van't Hoff equation, lnkp decreases with increasing temperature for an exothermic reaction.
False
Corrosion is not a phenomenon that occurs on the surface of substances in surface chemistry.
False
Adsorption is always an exothermic process, making it thermodynamically favorable.
False
Test your knowledge of surface chemistry, nanoparticles, and nanomaterials with this quiz. Explore the chemical phenomena at the interface of different surfaces and their applications in surface engineering. Brush up on adsorption, surface tension, and other surface-related phenomena.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
