Q. 144.0( 1 Vote )

(i) What is the r

Answer :

Ans for option (i)


Activated charcoal or activated carbon is a solid with high surface area and greater micro porosity which gives 3,000 m2 surface area for just one gram of activated carbon!


This large surface area helps in adsorption of harmful and unnecessary particulate matter and chemicals in the atmosphere. Thus activated charcoal is used in gas mask to prevnet smoke and chemicals to enter the respiratory system.


Option (ii)


FeCl3 is a salt but with weak hydration energy. When it comes with NaOH it can form a stronger Na+Cl- ionic bond that has higher heat of hydration and is more stable. Due to this OH- ions are adsorped and a negatively charged sol is obtained.


Sol will be represented as follows:



Option (iii)


Chemisorption is the adsorption of chemical species by undergoing chemical bonding with the reactant. The reactant and undergoes chemical changes during a chemisorption process. Depending on the type of reaction and the nature of surface it varies with temperature for different substances.


As the temperature is increased the molecules that need to cross the activation energy barrier is reached faster and the rate of chemisorption increases with temperature. After a certain raise in temperature, further increase will superheat the molecules or give them enough momentum so that they do not come in contact to react leading to decrease in the rate of adsorption.



Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

<span lang="EN-USChemistry - Exemplar

Do the vital funcChemistry - Exemplar

What is the role Chemistry - Exemplar

<span lang="EN-USChemistry - Exemplar

Which of the follChemistry - Exemplar

How does a solid Chemistry - Exemplar

<span lang="EN-USChemistry - Exemplar