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What are the similarities betwwen physisorption and chemisorption

Posted by Shraddha Verma 3 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Giri Prasanth 3 years, 6 months ago

1) Bothh physisorption and chemisaoption are surface phenomenon. 2) Both are directly proportional to surface area. 3) Both are exothermic.

Aayush Raj 3 years, 6 months ago

Physisorption Chemisorption 1. Physisorption is non- specific in nature. It involves Waal’s interaction between adsorbate and adsorbent.1. Chemisorption is highly specific in nature as it involves chemical bond formation between adsorbate and adsorbent. 2. On increasing the temperature physisorption decreases.2. On increasing the temperature chemisorption increases. 3. Physisorption is reversible in nature.3. Chemisorption is irreversible in nature. 4. In the case of physisorption, the enthalpy change is small. 4. In the case of chemisorption, the enthalpy change is high. One similarity between physisorption and chemisorption both increases with increase in surface area.

ANSWER

What do you mean by tetrahedral void

Posted by Utkarsh Singh 3 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

Shraddha Verma 3 years, 6 months ago

A void surrounded by 4 atoms

Diksha Garg 3 years, 6 months ago

The void which is made by 2 octahedral void or 6 spheres.

Giri Prasanth 3 years, 6 months ago

https://youtu.be/B1JzFAD1GAo I think this video help you to understand the concept more better.

Anuradha Patwari 3 years, 6 months ago

0.225 R And R is radius of sphere

ANSWER

Gold atom crystallizes in a F.C.C structure. Atomic radius of the metal is 100pm. What is the length of the side of the unit cell, how many gold atoms are present in 1cm^3 gold crystal ?

Posted by Akankshya Mishra 3 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Assertion : Albumin is a globular protein. Reason : Polypeptide chain coils around to give a straight chain.

Posted by Rajnandan Patil 3 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Calculate the emf of the cell Ag(s)I Ag+ (aq, 1M)II Cu2+ (aq, 1M) I Cu(s) And predict the cell reaction. EoAg2+/Ag = +0.80V, EoCu2+/Cu = +0.34V. Predict whether this cell is feasible or not, if not write the feasible cell using these electrodes.

Posted by Sri Karpaga Vinayagam Sri Karpaga Vinayagam 3 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Is Ullmann reaction in syllabus for 2020-21 batch or not? If yes , then what is the page no. In NCERT .plz tell me i need this

Posted by Mr. Badmash 3 years, 6 months ago

CBSE > Class 12 > Chemistry

5 answers

Devil ? 3 years, 6 months ago

@Badmash ... Jr ab kya krna pdkr 12 isse acha 11 pdo ... For competitive exams

Mr. Badmash 3 years, 6 months ago

@ Devil . Kya kre tum nhi pad rhe to tumhari kami puri kr rhe h??

Devil ? 3 years, 6 months ago

Bhai tum abhi vi pd rhe ho kya ?☘️?

Yash Gupta 3 years, 6 months ago

No

Nik . 3 years, 6 months ago

Nope

ANSWER

A certain sample of cuprous sulphide is found to have a composition of Cu1.92S because of incorporation of Cu2+ in the lattice.What is the ratio of Cu2+ to Cu+?

Posted by Pranjal Sharma 3 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

H

Posted by Aviral Shukla 3 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Atharva Verma 3 years, 6 months ago

Hii

Tanvi Sharma 3 years, 6 months ago

H??

ANSWER

An organic compound A (CsHa) on hydration in presence of H2SO4/HgSO4 gives compound B(C3HO). Compound B gives white crystalline product D with sodium hydrogensulphite.it gives negative Tollen's test and positive iodoform test. On drastic oxidation B gives compound C along with formic acid. Identify compounds A,B and C and explain all the reactions.

Posted by Mayur Buchkul 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Riya Sharma 3 years, 6 months ago

Compound B ( propanone ) is a ketone therefore Fehling's test and Tollen's tests are negative.

ANSWER

Assertion: presence of equal and similar charges on colloidal particles is largely responsible in providing

Posted by Dhanusri Velayutham 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Senthil Kumar 3 years, 5 months ago

dfg

ANSWER

Assertion : the presence of equal and similar

Posted by Dhanusri Velayutham 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 3 years, 6 months ago

Please ask question with complete information.

ANSWER

Arrange the following compounds in increasing order of their acid strength with reason Propan-1-ol, 2,4,6-trinitrophenol, 3-nitrophenol, 3,5-dinitrophenol, phenol, 4-methylphenol.???

Posted by Kirti Sharma? 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Arman Gupta 3 years, 6 months ago

PROPAN-1-OL <<< 4-METHYL PHENOL <<< PHENOL <<< 3-NITROPHENOL <<< 3,5-DINITROPHENOL <<< 2,4,6-TRINITROPHENOL... THIS IS BECAUSE ALCHOHOL IS ALWAYS LESS ACIDIC THAN PHENOLS... ALSO NITRO GROUP AT META POSITIONS WITHDRAWS ELECTRONS ONLY BY INDUCTIVE EFFECT AND AT PARA POSITIONS WITHDRAW ELECTRONS BY REASONANCE AS WELL AS INDUCTIVE EFFECT...FINALLY METHY GROUP IS AN ELECTRON DONATING GROUP WHICH INCREASES ELECTRON DENSITY ON OXYGEN AND THUS REDUCES THE ACIDITY...

ANSWER

Calculate amount of benzoic acid needed for making 250 ml of0.15 m solution in methanol

Posted by Anshveer Singh 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 3 years, 6 months ago

ANSWER

In tetrahedral void coordination number is 4 how explain If tetrahedral void is made from 4 atoms if we consider any one atom to touch it they're 3

Posted by Magan Garval 3 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is IUPAC?

Posted by Nancy Gupta 3 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Magan Garval 3 years, 6 months ago

International union of pure and applied chemistry

Rahul Kumar Keshri 3 years, 6 months ago

It is a group which one of the function is to generalise the study of chemistry

Anuradha Patwari 3 years, 6 months ago

International union of pure and applied chemistry

ANSWER

Distinguish between butan-1-ol and butan-2-ol

Posted by Siddharth Singh 3 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Divyansh Dev 3 years, 6 months ago

It can be distinguish by idoform test

Anuradha Patwari 3 years, 6 months ago

Butan2ol will form ketone c=o

Anuradha Patwari 3 years, 6 months ago

Butan1ol will form aldehyde cho

ANSWER

The boiling point elevation of 0.6 g acetic acid in 100 g benzene is 0.1265 k. What conclusion can you draw about the state of solute in solution? Molar elevation constant for benzene is 2.53 deg per molar

Posted by Shah Vraj 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanjay K 3 years, 6 months ago

solute must be non volatile

ANSWER

Can the same solute have i>1and i<1 in different solvents give example

Posted by Kavitha Kosaraju 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohit Bansal 3 years, 6 months ago

Yes

ANSWER

What is the IUPAC name of complex [NiCl4]^2+

Posted by Pallavi Anand 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 3 years, 6 months ago

tetrachloronickelate(II) ion

ANSWER

Give the plausible explanation for the following . 1. Glucose doesn't give 2,4‐DNP test. 2. The two strand in DNA are not identical but are complementary

Posted by Harshvardhan Gupta 3 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Anuradha Patwari 3 years, 6 months ago

Glucose don't gives 2,4 dnp test bec it doesn't react with Schiff reagents

Anuradha Patwari 3 years, 6 months ago

The two dna strand are not identical bec the nitrogenous bases position are different on both strand and complementary bec the nitrogenous bases are bonded with their complent one and are not changed

ANSWER

The surface charge density for a spherical conductor is 2mu C/m^2. Calculate electric potential of the conductor assuming it's radius to be 0.2m

Posted by Mono .... 3 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

बेबि बीच 3 years, 6 months ago

Find V using E

बेबि बीच 3 years, 6 months ago

E.dA= q/ \epsilon_{\circ}

बेबि बीच 3 years, 6 months ago

net charge=2muC×0.2×0.2×pi

ANSWER

Can anyone give me the syllabus for jee mains

Posted by Nik . 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohit Bansal 3 years, 6 months ago

Mathematics Syllabus: Sets, Relations & Functions, Matrices & Determinants, Permutations & Combinations, Complex Numbers & Quadratic Equations, Binomial Theorem, Mathematical Induction, Limit, Sequences & Series, Differential Equations, Integral Calculus, Continuity & Differentiability, Three Dimensional Geometry, Co-ordinate Geometry, Statistics & Probability, Vector Algebra, Mathematical Reasoning and Trigonometry. Physics Syllabus: Laws of Motion, Kinematics, Work, Energy & Power, Gravitation, Rotational Motion, Physics & Measurement, Properties of Solids & Liquids, Thermodynamics, Electrostatics, Oscillations & Waves, Kinetic Theory of Gases, Magnetic Effects of Current & Magnetism, Electromagnetic Induction & Alternating Currents, Current Electricity, Optics, Electromagnetic Waves, Dual Nature of Matter & Radiation, Electronic Devices, Atoms & Nuclei, Communication Systems, etc. Chemistry Syllabus: Physical Chemistry: Some Basic concepts in Chemistry, States of Matter, Chemical Bonding & Molecular Structure, Atomic Structure, Solutions, Redox Reactions & Electrochemistry, Equilibrium, Chemical Thermodynamics, Chemical Kinetics, Surface Chemistry, etc. Inorganic Chemistry: General Principles & Process of Isolation of Metals, Hydrogen, p – Block Elements, s – Block Element, Co-ordination Compounds, d – and f – Block Elements, Classification of Elements & Periodicity in Properties, Environmental Chemistry, etc. Organic Chemistry: Some Basic Principles of Organic Chemistry, Organic Compounds Containing Halogens, Purification & Characterization of Organic Compounds, Hydrocarbons, Polymers, Organic Compounds Containing Nitrogen, Organic Compounds Containing Oxygen, Bio Molecules, Principles Related to Practical Chemistry, Chemistry in Everyday Life, etc.

ANSWER

What is solid state ?

Posted by Vaishali ..... 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 3 years, 6 months ago

Solid-state chemistry, also sometimes referred as materials chemistry, is the study of the synthesis, structure, and properties of solid phase materials, particularly, but not necessarily exclusively of, non-molecular solids.

ANSWER

Name a defect which (i) increase density if the solid (ii) decrease density of the solid

Posted by Sara Kerketta 3 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Shraddha Verma 3 years, 6 months ago

(i)Interstitial defect (ii) Vacancy defect

Sachin Sharma 3 years, 6 months ago

Schottky defect ( decreases)

Sachin Sharma 3 years, 6 months ago

Interestial defect

ANSWER

Hello Sir/Madam can u provide the detailed notes for chemistry volume 2 haloalkanes and haloarenes it will be very usefull for all of us Regards Ali

Posted by Asmr Gaming 3 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Anuradha Patwari 3 years, 6 months ago

Go for Aman dhatterwal notes this will really help you

Umesh Sharma 3 years, 6 months ago

you download it from net

ANSWER

Who is prepared for class 12 exam 2020-21 session?

Posted by Anurag Saral 3 years, 6 months ago

CBSE > Class 12 > Chemistry

5 answers

Anurag Saral 3 years, 6 months ago

gg

Nik . 3 years, 6 months ago

Preparing for mains

Nik . 3 years, 6 months ago

Hi aastha

Devil ? 3 years, 6 months ago

?

Aastha ?✨ 3 years, 6 months ago

Me?

ANSWER

Reimer tiemann reaction

Posted by Bhuvana Bhuvana 3 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Anuradha Patwari 3 years, 6 months ago

Aldehyde as products

Anurag Saral 3 years, 6 months ago

C6H5OH (in presence of CHCl3+aqNaOH) -----> C6H5O^-Na^+(CHO) (in presence of H^+)------> C6H5OH(CHO)

ANSWER

Henrys law constant for the solubility of methane in benzene at 298k is 4.27 ×10^5mmhg calculate the solubility of methane in benzene at 298k under 760mmhg

Posted by Khilendra Sahu 3 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

A solution containing 2.56 g of sulphur dissolved in 100g of naphthalene whose melting point is 80.10C gave a freezing point lowering of 0.06800C. Calculate the formula of sulphur

Posted by Himanshu Gupta 3 years, 7 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

State the formula relating pressure of a gas with its mole fraction in liquid solution in contact with it

Posted by Ifra Saniya 3 years, 7 months ago

CBSE > Class 12 > Chemistry

1 answers

Akshay Kumar 3 years, 7 months ago

No

ANSWER

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