NCERT solutions for Chemistry Part 1 and 2 Class 11 chapter 9 - Hydrogen [Latest edition]

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Solutions for Chapter 9: Hydrogen

Below listed, you can find solutions for Chapter 9 of CBSE, Karnataka Board PUC NCERT for Chemistry Part 1 and 2 Class 11.


EXERCISES
EXERCISES [Pages 296 - 298]

NCERT solutions for Chemistry Part 1 and 2 Class 11 Chapter 9 Hydrogen EXERCISES [Pages 296 - 298]

EXERCISES | Q 9.1 | Page 296

Justify the position of hydrogen in the periodic table on the basis of its electronic configuration.

EXERCISES | Q 9.2 | Page 296

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?

EXERCISES | Q 9.3 | Page 296

Why does hydrogen occur in a diatomic form rather than in a monoatomic form under normal conditions?

EXERCISES | Q 9.4 | Page 296

How can the production of dihydrogen, obtained from ‘coal gasification’, be increased?

EXERCISES | Q 9.5 | Page 296

Describe the bulk preparation of dihydrogen by the electrolytic method. What is the role of an electrolyte in this process?

EXERCISES | Q 9.6 - (i) | Page 296

Complete the following reaction:

\[\ce{H_{2(g)} + M_M O_{O(s)} ->[\Delta]}\] ?

EXERCISES | Q 9.6 - (ii) | Page 296

Complete the following reaction:

\[\ce{CO_{(g)} + H_{2(g)} ->[\Delta][catalyst]}\] ?

EXERCISES | Q 9.6 - (iii) | Page 297

Complete the following reaction:

\[\ce{C3H_{8(g)} + 3H2O_{(g)} ->[\Delta][catalyst]}\]?

EXERCISES | Q 9.6 - (iv) | Page 297

Complete the following reaction:

\[\ce{Zn_{(s)} + NaOH_{(aq)} ->[heat]}\]?

EXERCISES | Q 9.7 | Page 297

Discuss the consequences of high enthalpy of H–H bond in terms of chemical reactivity of dihydrogen.

EXERCISES | Q 9.8 - (i) | Page 297

What do you understand by electron-deficient? Provide justification with a suitable example.

EXERCISES | Q 9.8 - (ii) | Page 297

What do you understand by electron-precise? Provide justification with a suitable example.

EXERCISES | Q 9.8 - (iii) | Page 297

What do you understand by electron-rich compounds of hydrogen? Provide justification with a suitable example.

EXERCISES | Q 9.9 | Page 297

What characteristics do you expect from an electron-deficient hydride with respect to its structure and chemical reactions?

EXERCISES | Q 9.10 | Page 297

Do you expect the carbon hydrides of the type (CnH2n + 2) to act as ‘Lewis’ acid or base? Justify your answer.

EXERCISES | Q 9.11 | Page 297

What do you understand by the term “non-stoichiometric hydrides”? Do you expect this type of the hydrides to be formed by alkali metals? Justify your answer.

EXERCISES | Q 9.12 | Page 297

How do you expect the metallic hydrides to be useful for hydrogen storage? Explain.

EXERCISES | Q 9.13 | Page 297

How does the atomic hydrogen or oxy-hydrogen torch function for cutting and welding purposes? Explain.

EXERCISES | Q 9.14 | Page 297

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

EXERCISES | Q 9.15 | Page 297

Saline hydrides are known to react with water violently producing fire. Can CO2, a well-known fire extinguisher, be used in this case? Explain.

EXERCISES | Q 9.16 - (i) | Page 297

Arrange the following:

CaH2, BeH2 and TiH2 in order of increasing electrical conductance.

EXERCISES | Q 9.16 - (ii) | Page 297

Arrange the following:

LiH, NaH and CsH in order of increasing ionic character.

EXERCISES | Q 9.16 - (iii) | Page 297

Arrange the following:

H–H, D–D and F–F in order of increasing bond dissociation enthalpy.

EXERCISES | Q 9.16 - (iv) | Page 297

Arrange the following:

NaH, MgH2 and H2O in order of increasing reducing property.

EXERCISES | Q 9.17 | Page 298

Compare the structures of H2O and H2O2.

EXERCISES | Q 9.18 | Page 297

What do you understand by the term ’auto-protolysis’ of water? What is its significance?

EXERCISES | Q 9.19 | Page 297

Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.

EXERCISES | Q 9.20 - (i) | Page 297

Complete the following chemical reaction.

\[\ce{PbS_{(s)} + H_2O_{2(aq)} ->}\] ______ 

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

EXERCISES | Q 9.20 - (ii) | Page 297

Complete the following chemical reaction.

\[\ce{MnO^-_{4(aq)} + H_2O_{(g)} ->}\]

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

EXERCISES | Q 9.20 - (iii) | Page 297

Complete the following chemical reaction.

\[\ce{CaO_{(s)} + H_2O_{(g)} ->}\]?

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

EXERCISES | Q 9.20 - (iv) | Page 297

Complete the following chemical reaction.

\[\ce{AlCl_{3(g)} + H_2O_{(l)} ->}\] ?

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

EXERCISES | Q 9.20 - (v) | Page 297

Complete the following chemical reaction.

\[\ce{Ca_3N_{2(s)} + H_2O_{(l)} ->}\] ?

Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.

EXERCISES | Q 9.21 | Page 297

Describe the structure of the common form of ice.

EXERCISES | Q 9.22 | Page 297

What causes the temporary and permanent hardness of water?

EXERCISES | Q 9.23 | Page 297

Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.

EXERCISES | Q 9.24 | Page 297

Write chemical reactions to show the amphoteric nature of water.

EXERCISES | Q 9.25 | Page 297

Write chemical reactions to justify that hydrogen peroxide can function as an oxidizing as well as reducing agent.

EXERCISES | Q 9.26 | Page 298

What is meant by ‘demineralised’?

EXERCISES | Q 9.26 | Page 298

how can demineralised be obtained?

EXERCISES | Q 9.27 | Page 298

Is demineralised or distilled water useful for drinking purposes? If not, how can it be made useful?

EXERCISES | Q 9.28 | Page 298

Describe the usefulness of water in biosphere and biological systems.

EXERCISES | Q 9.29 | Page 298

What properties of water make it useful as a solvent? What types of compound can it (i) dissolve, and (ii) hydrolyse?

EXERCISES | Q 9.30 | Page 298

Knowing the properties of H2O and D2O, do you think that D2O can be used for drinking purposes?

EXERCISES | Q 9.31 | Page 298

What is the difference between the terms ‘hydrolysis’ and ‘hydration’?

EXERCISES | Q 9.32 | Page 298

How can saline hydrides remove traces of water from organic compounds?

EXERCISES | Q 9.33 | Page 298

What do you expect the nature of hydrides is, if formed by elements of atomic numbers 15, 19, 23 and 44 with dihydrogen? Compare their behaviour towards the water.

EXERCISES | Q 9.34 | Page 298

Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.

EXERCISES | Q 9.35 | Page 298

How does H2O2 behave as a bleaching agent?

EXERCISES | Q 9.36 - (i) | Page 298

What do you understand by the term hydrogen economy?

EXERCISES | Q 9.36 - (ii) | Page 298

What do you understand by the term hydrogenation?

EXERCISES | Q 9.36 - (iii) | Page 298

What do you understand by the term syngas?

EXERCISES | Q 9.36 - (iv) | Page 298

What do you understand by the term water-gas shift reaction?

EXERCISES | Q 9.36 - (v) | Page 298

What do you understand by the term fuel-cell?

Solutions for Chapter 9: Hydrogen

EXERCISES

NCERT solutions for Chemistry Part 1 and 2 Class 11 chapter 9 - Hydrogen

Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Chemistry Part 1 and 2 Class 11 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Chemistry Part 1 and 2 Class 11 CBSE, Karnataka Board PUC 9 (Hydrogen) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Chemistry Part 1 and 2 Class 11 chapter 9 Hydrogen are Position of Hydrogen in the Periodic Table, Dihydrogen, Preparation of Dihydrogen, Properties and Uses of Dihydrogen, Ionic or Saline Hydrides, Covalent or Molecular Hydride, Metallic or Non-stoichiometric (or Interstitial) Hydrides, Structure of Water, Structure of Ice, Temporary Hardness of Water, Permanent Hardness of Water, Preparation of Hydrogen Peroxide, Physical Properties of Hydrogen Peroxide, Structure of Hydrogen Peroxide, Chemical Properties of Hydrogen Peroxide, Storage of Hydrogen Peroxide, Uses of Hydrogen Peroxide, Heavy Water, Dihydrogen as a Fuel, Physical Properties of Water, Classification of water: Soft and Hard Water, Chemical Properties of Water, Classification of Hydrocarbons, Alkanes - Introduction, Nomenclature and Isomerism, Preparation of Alkanes from Unsaturated Hydrocarbons, Alkyl Halides and Carboxylic Acids, Physical Properties of Alkanes, Chemical Properties of Alkanes, Conformations (Ethane), Alkenes - Introduction, Structure of Double Bond (Ethene), Nomenclature, Isomerism, Preparation of Alkenes from Alkynes, Alkyl Halides, Vicinal Dihalides and Alcohols by Acidic Dehydration, Physical Properties of Alkenes, Chemical Properties of Alkenes, Alkynes - Introduction, Nomenclature and Isomerism, Structure of Triple Bond, Preparation of Alkynes from Calcium Carbide and Vicinal Dihalides, Physical Properties of Alkynes, Chemical Properties of Alkynes, Aromatic Hydrocarbons - Introduction, Nomenclature and Isomerism, Structure of Benzene, Aromaticity (Huckel Rule), Preparation of Benzene, Physical Properties of Aromatic Hydrocarbons, Chemical Properties of Aromatic Hydrocarbons, Electrophilic Substitution Reactions, Mechanism of Electrophilic Substitution Reactions, Directive Influence of a Functional Group in Monosubstituted Benzene, Carcinogenicity and Toxicity.

Using NCERT Chemistry Part 1 and 2 Class 11 solutions Hydrogen exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Chemistry Part 1 and 2 Class 11 students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 9, Hydrogen Chemistry Part 1 and 2 Class 11 additional questions for Mathematics Chemistry Part 1 and 2 Class 11 CBSE, Karnataka Board PUC, and you can use Shaalaa.com to keep it handy for your exam preparation.

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