CBSE Class 11 Chemistry Hydrogen Notes Set D

Download CBSE Class 11 Chemistry Hydrogen Notes Set D in PDF format. All Revision notes for Class 11 Chemistry have been designed as per the latest syllabus and updated chapters given in your textbook for Chemistry in Standard 11. Our teachers have designed these concept notes for the benefit of Grade 11 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 11 Chemistry for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 11 Chemistry given our website

Hydrogen Class 11 Chemistry Revision Notes

Class 11 Chemistry students should refer to the following concepts and notes for Hydrogen in standard 11. These exam notes for Grade 11 Chemistry will be very useful for upcoming class tests and examinations and help you to score good marks

Hydrogen Notes Class 11 Chemistry

CBSE Class 9 Chemistry-Hydrogen. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.

Hydrogen

ImportantQuestions

1.Write the names of isotopes of hydrogen.

2.Why hydrogen molecule is unreactive at room temperature?

3.Whydoes hydrogen occur in a diatomic form rather than in a monoatomicf orm under normal conditions?

4.What do you understand by the term auto-protolysis of water?

5.What properties of water make it useful as a solvent?

6.Does heavy water can be used for drinking purposes?

7.How does hydrogen peroxide behave as a bleaching agent?

8.Why is hydrogen peroxide stored in waxlined bottles?

9.Why does water show high boiling point as compared to hydrogen sulphide?

Answers

1.Protium,deuterium and tritium

2.Due to high enthalpy of H-H bond.

3.To attain the stable inert gas configuration of helium, it shares its single electron with electron of other hydrogen atom to form a stable diatomic molecule.

4.Self ionisation of water is termed as auto-protolysis of water.

5.Water has high dielectric constant and high dipole moment.

6.No as it slows down the rates of reactions occurring in human beings, plants and animals.

7.Bleaching action of hydrogen peroxide due to oxidation of colouring matter by nascent oxygen which it liberates on decomposition.

8.Hydrogen peroxide is decomposed by rough surfaces of glass, alkali oxides present in it and

light to form water and oxygen.

H2O2------------>H2O + O

9.Due to H-bonding in water.

1.What is meant by demineralised water? Is it useful for drinking purposes?

2.Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?

3.Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidised and reduced?

4.Write chemical reactions to show the amphoteric nature of water.

5.Write chemical reactions to justify that hydrogen peroxide function as an oxidising as well as reducing agent.

6. What causes the temporary and permanent hardness of water?

Answer

1. Water which is free from all cations and anions is called demineralised water. It is not useful for drinking purposes since it does not contain even useful minerals. 

2. HF has highest magnitude of hydrogen bonding since F is the most electronegative among N, O and F.

3. F2 + H2O ---O2 + H+ + F-

3. F2 + H2O --- O3 + H+ + F-

these reaction , water act as reducing agent and itself oxidised to either O2 or O3 while F2 acts as an oxidising agent and itself reduced to F- ion.

4. H2O + H2S ----H3O+ + HS-(Water act as base)

H2O + NH3 ----NH+4  + OH-(Water act as acid)

5. Oxidising agent

Fe2+ + H+ + H2O2 -----------Fe3+ + H2O

MnO4- + H+ + H2O2 --------Mn2+ + H2O + O2

6. Temporary hardness is due to presence of soluble bicarbonates of calcium and Magnesium and permanent hardness is due to chlorides and sulphates of calcium and magnesium.

1. Hard water is unsuitable for laundry, washing and dyeing. Explain.

2. What do you understand by (i) electron-deficient, (ii) electron-precise, and (iii) electron-rich compounds of hydrogen? Provide justification with suitable examples.

Answers

1. Since we know that the soap are the sodium salts of higher fatty acids like stearic acid

(C17H35COOH), oleic acid (C17H33COOH) or palmitic acid (C17H31COOH). When soap is added to hard water, the anions of soap combine with Ca+2 and Mg+2 ions to form calcium and magnesium salt which are insoluble in water.

M +2 + 2C17H35COONa → (C17H35COO)2M(ppt) + 2Na

Therefore, no lather is produce until all the calcium and magnesium ions are precipitated. This also results into wastage of lot of soap. So hard water is unsuitable for laundry, washing and dyeing.

2. [a]Electron deficient:- The hydrides which do not have sufficient number of electrons to form normal covalent bonds is called electron deficient hydride. For example, hydride of group 13 (BH3, AlH3, etc.).

[b] Electron precise:-The hydrides which have sufficient number of electrons required for forming covalent bonds is called electron precise hydride. For example, hydrides of group 14

(CH4, SiH4, GeH4, SnH4, PbH4 etc.) they have tetrahedral geometry.

[c] Electron rich hydrides:-The hydrides which have excess electrons as required to form normal covalent bonds is called electron rich hydride. For example, hydrides of group 15 to 17 (NH3PH3, H2O, H2S, H2Se, H2Te, HF etc.)


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CBSE Class 11 Chemistry Formulae
CBSE Class 11 Chemistry Revision Notes Set A
CBSE Class 11 Chemistry Revision Notes Set B
CBSE Class 11 Chemistry Revision Notes Set C
CBSE Class 11 Chemistry Revision Notes Set D
CBSE Class 11 Chemistry Revision Notes Set E
CBSE Class 11 Chemistry Revision Notes Set F
CBSE Class 11 Chemistry Revision Notes Set G
CBSE Class 11 Chemistry Study Material All Chapters
CBSE Class 11 Chemistry Summary Si Unit Notes
CBSE Class 11 Chemistry Summary Significant Figures
Chapter 1 Some Basic Concepts of Chemistry
CBSE Class 11 Chemistry Basic Concepts Of Chemistry Notes Set A
CBSE Class 11 Chemistry Basic Concepts Of Chemistry Notes Set B
Chapter 2 Structure of Atom
CBSE Class 11 Chemistry Structure Of Atom Notes Set A
CBSE Class 11 Chemistry Structure Of Atom Notes Set B
CBSE Class 11 Chemistry Structure Of Atom Notes Set C
CBSE Class 11 Chemistry Structure Of Atom Notes Set D
CBSE Class 11 Chemistry Structure Of Atom Notes Set E
CBSE Class 11 Chemistry Structure Of Atom Notes Set F
Chapter 3 Classification of Elements and Periodicity in Properties
CBSE Class 11 Chemistry Classification Of Elements Notes Set A
CBSE Class 11 Chemistry Classification Of Elements Notes Set B
CBSE Class 11 Chemistry Classification Of Elements Notes Set C
CBSE Class 11 Chemistry Classification Of Elements And Periodicity In Properties Of Elements Notes Set A
CBSE Class 11 Chemistry Classification Of Elements And Periodicity In Properties Of Elements Notes Set B
CBSE Class 11 Chemistry Classification Of Elements And Periodicity In Properties Of Elements Notes Set C
CBSE Class 11 Chemistry Periodic Classification Of Elements Notes
Chapter 4 Chemical Bonding and Molecular Structure
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Notes Set A
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Notes Set B
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Notes Set C
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Notes Set D
CBSE Class 11 Chemistry Chemical Bonding And Molecular Structure Notes Set E
CBSE Class 11 Chemistry Chemical Bonding Notes
Chapter 5 States of Matter
CBSE Class 11 Chemistry States Of Matter Notes Set A
CBSE Class 11 Chemistry States Of Matter Notes Set B
CBSE Class 11 Chemistry States Of Matter Notes Set C
CBSE Class 11 Chemistry States Of Matter Notes Set D
CBSE Class 11 Chemistry States Of Matter Notes Set E
CBSE Class 11 Chemistry States Of Matter Notes Set F
Chapter 6 Thermodynamics
CBSE Class 11 Chemistry Thermodynamics Notes Set A
CBSE Class 11 Chemistry Thermodynamics Notes Set B
CBSE Class 11 Chemistry Thermodynamics Notes Set C
CBSE Class 11 Chemistry Thermodynamics Notes Set D
CBSE Class 11 Chemistry Thermodynamics Notes Set E
CBSE Class 11 Chemistry Thermodynamics Notes Set F
Chapter 7 Equilibrium
CBSE Class 11 Chemistry Equilibrium Notes Set A
CBSE Class 11 Chemistry Equilibrium Notes Set B
CBSE Class 11 Chemistry Equilibrium Notes Set C
CBSE Class 11 Chemistry Equilibrium Notes Set D
CBSE Class 11 Chemistry Equilibrium Notes Set E
Chapter 8 Redox Reactions
CBSE Class 11 Chemistry Redox Reaction Summary Notes
CBSE Class 11 Chemistry Redox Reactions Notes Set A
CBSE Class 11 Chemistry Redox Reactions Notes Set B
CBSE Class 11 Chemistry Redox Reactions Notes Set C
CBSE Class 11 Chemistry Redox Reactions Notes Set D
Chapter 9 Hydrogen
CBSE Class 11 Chemistry Hydrogen Notes Set A
CBSE Class 11 Chemistry Hydrogen Notes Set B
CBSE Class 11 Chemistry Hydrogen Notes Set C
CBSE Class 11 Chemistry Hydrogen Notes Set D
Chapter 10 The s-Block Elements
CBSE Class 11 Chemistry The S Block Element Notes Set A
CBSE Class 11 Chemistry The S Block Element Notes Set B
CBSE Class 11 Chemistry The S Block Element Notes Set C
CBSE Class 11 Chemistry The S Block Element Notes Set D
Chapter 11 The p-Block Elements
CBSE Class 11 Chemistry P Block Elements Notes
CBSE Class 11 Chemistry The P Block Elements Notes Set A
CBSE Class 11 Chemistry The P Block Elements Notes Set B
CBSE Class 11 Chemistry The P Block Elements Notes Set C
Chapter 12 Organic Chemistry – Some Basic Principles & Techniques
CBSE Class 11 Chemistry Organic Chemistry Notes Set A
CBSE Class 11 Chemistry Organic Chemistry Notes Set B
CBSE Class 11 Chemistry Organic Chemistry Notes Set C
CBSE Class 11 Chemistry Organic Chemistry Some Basic Principles And Techniques Notes
Chapter 13 Hydrocarbons
CBSE Class 11 Chemistry Hydrocarbon Notes Set A
CBSE Class 11 Chemistry Hydrocarbon Notes Set B
CBSE Class 11 Chemistry Hydrocarbon Notes Set C
CBSE Class 11 Chemistry Hydrocarbon Summary
Chapter 14 Environmental Chemistry
CBSE Class 11 Chemistry Environmental Chemistry Notes Set A
CBSE Class 11 Chemistry Environmental Chemistry Notes Set B
CBSE Class 11 Chemistry Environmental Chemistry Notes Set C
CBSE Class 11 Chemistry Environmental Chemistry Notes Set D

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