Home
NCERT Solution
Class 12
Chemistry
Surface Chemistry
what is the difference between physisorption and c...

Question:
What is the difference between physisorption and chemisorption?

Answer:

Physisorption Chemisorption

1.

In this type of adsorption, the adsorbate is attached to the surface of the adsorbent with weak van der Waal's forces of attraction.
In this type of adsorption, strong chemical bonds are formed between the adsorbate and the surface of the adsorbent.

2.

No new compound is formed in the process.
New compounds are formed at the surface of the adsorbent.

3.

It is generally found to be reversible in nature.
It is usually irreversible in nature.

4.

Enthalpy of adsorption is low as weak van der Waal's forces of attraction are involved. The values lie in the range of 20-40 kJ mol^{- 1}.
Enthalpy of adsorption is high as chemical bonds are formed. The values lie in the range of 40-400 kJ mol^{- 1}.

5.

It is favoured by low temperature conditions.
It is favoured by high temperature conditions.

6.

It is an example of multi-layer adsorption
It is an example of mono-layer adsorption.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

< Previous Question

Next Question >

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='3' AND subId='9' AND ex_no!=0 AND status=1 and id!=1852 ORDER BY views desc, last_viewed_on desc limit 0,10

Popular questions of class 12 Chemistry

How the following conversions can be carried out?

(i) Propene to propan-1-ol

(ii) Ethanol to but-1-yne

(iii) 1-Bromopropane to 2-bromopropane

(iv) Toluene to benzyl alcohol

(v) Benzene to 4-bromonitrobenzene

(vi) Benzyl alcohol to 2-phenylethanoic acid

(vii) Ethanol to propanenitrile

(viii) Aniline to chlorobenzene

(ix) 2-Chlorobutane to 3, 4-dimethylhexane

(x) 2-Methyl-1-propene to 2-chloro-2-methylpropane

(xi) Ethyl chloride to propanoic acid

(xii) But-1-ene to n-butyliodide

(xiii) 2-Chloropropane to 1-propanol

(xiv) Isopropyl alcohol to iodoform

(xv) Chlorobenzene to p-nitrophenol

(xvi) 2-Bromopropane to 1-bromopropane

(xvii) Chloroethane to butane

(xviii) Benzene to diphenyl

(xix) tert-Butyl bromide to isobutyl bromide

(xx) Aniline to phenylisocyanide

Give simple chemical tests to distinguish between the following pairs of compounds.

(i) Propanal and Propanone

(ii) Acetophenone and Benzophenone

(iii) Phenol and Benzoic acid

(iv) Benzoic acid and Ethyl benzoate

(v) Pentan-2-one and Pentan-3-one

(vi) Benzaldehyde and Acetophenone

(vii) Ethanal and Propanal

A 5% solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of 5% glucose in water if freezing point of pure water is 273.15 K.

A solution of glucose in water is labelled as 10% w/w, what would be the molality and mole fraction of each component in the solution? If the density of solution is 1.2 g mL^-1, then what shall be the molarity of the solution?

Henry's law constant for CO₂ in water is 1.67 x 10⁸Pa at 298 K. Calculate the quantity of CO₂in 500 mL of soda water when packed under 2.5 atm CO₂pressure at 298 K.

Calculate the mass of a non-volatile solute (molar mass 40 g mol^-1) which should be dissolved in 114 g octane to reduce its vapour pressure to 80%.

The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.

Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.

How many mL of 0.1 M HCl are required to react completely with 1 g mixture of Na₂CO₃ and NaHCO₃ containing equimolar amounts of both?

If NaCl is doped with 10^-3mol % of SrCl₂, what is the concentration of cation vacancies?

SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='3' AND subId='9' AND ex_no!=0 AND status=1 and id!=1852 ORDER BY last_viewed_on desc limit 0,10

Recently Viewed Questions of Class 12 Chemistry

How are XeO₃and XeOF₄prepared?

Compare the chemistry of actinoids with that of the lanthanoids with specialreference to:

(i) electronic configuration

(ii) atomic and ionic sizes

(iii) oxidation stateand

(iv) chemical reactivity.

Write chemical reactions taking place in the extraction of zinc from zinc blende.

Calculate the emf of the cell in which the following reaction takes place:

Ni_(s) + 2Ag⁺ (0.002 M) → Ni²⁺ (0.160 M) + 2Ag_(s)

Given that E^ø_cell = 1.05 V

Giving examples, differentiate between 'roasting' and 'calcination'.

Where does the water present in the egg go after boiling the egg?

The resistance of a conductivity cell containing 0.001M KCl solution at 298 K is 1500 Ω. What is the cell constant if conductivity of 0.001M KCl solution at 298 K is 0.146 x 10^-3S cm^-1.

The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.

What are emulsions? What are their different types? Give example of each type.

Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:

(i) [Fe(CN)₆]^4-

(ii) [FeF₆]^3-

(iii) [Co(C₂O₄)3]^3-

(iv) [CoF₆]^3-

Comments

Answered by Ekta Mehta
4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

Answered by Ekta Mehta
4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

Answered by Ekta Mehta
4 months ago

Taking Screenshots on your Samsung Galaxy M31s is very easy and quick.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

Question:
What is the difference between physisorption and chemisorption?

< Previous Question

Next Question >

Popular questions of class 12 Chemistry

Recently Viewed Questions of Class 12 Chemistry

Comments

Comment(s) on this Question

Important links

Quick Links

Resources

Support

Physisorption	Chemisorption
1. In this type of adsorption, the adsorbate is attached to the surface of the adsorbent with weak van der Waal's forces of attraction.	In this type of adsorption, strong chemical bonds are formed between the adsorbate and the surface of the adsorbent.
2. No new compound is formed in the process.	New compounds are formed at the surface of the adsorbent.
3. It is generally found to be reversible in nature.	It is usually irreversible in nature.
4. Enthalpy of adsorption is low as weak van der Waal's forces of attraction are involved. The values lie in the range of 20-40 kJ mol^{- 1}.	Enthalpy of adsorption is high as chemical bonds are formed. The values lie in the range of 40-400 kJ mol^{- 1}.
5. It is favoured by low temperature conditions.	It is favoured by high temperature conditions.
6. It is an example of multi-layer adsorption	It is an example of mono-layer adsorption.

Question: What is the difference between physisorption and chemisorption?

< Previous Question

Next Question >

Popular questions of class 12 Chemistry

Recently Viewed Questions of Class 12 Chemistry

Comments

Comment(s) on this Question

Important links

Quick Links

Resources

Support

Question:
What is the difference between physisorption and chemisorption?