NCERT Solutions for Class 11 Chemistry Chapter 9: Hydrogen

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NCERT Solutions for Class 11 Chemistry Chapter 9 Hydrogen is provided in this article. Some of the important topics of Hydrogen chapter include:

As this topic has been omitted from the new CBSE Class 11 syllabus, no questions can be expected from this chapter. But it would be useful for other competitive exams.

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 9 pdf

NCERT Solutions for Class 11 Chemistry Chapter 9

NCERT Solutions for Class 11 Chemistry Chapter 9 Hydrogen is given below.

Class 11 Chemistry Chapter 9 Hydrogen – Important Questions

Hydrogen is the lightest atom and has only one proton and no neutrons. The three stable isotopes of hydrogen are:

Protium
Deuterium
Tritium

The first element in the periodic table is Hydrogen. It is placed in 'Group 1' of the periodic table on the basis of its configuration (1s¹).

Properties of Hydrogen:

Hydrogen is a colourless and odourless non-toxic gas.
It has the lowest density among all the other gases.
Hydrogen is the most abundant element in the universe.
Melting point of Hydrogen is -259.16° C.
Boiling point of Hydrogen is -252.879° C.
Density of Hydrogen is 0.000082 gram cm^-3.
Atomic mass of Hydrogen is 1.008.

Hydrides are the compounds of hydrogen with less electronegative elements. Hydrides are of three types:

Ionic Hydrides
Covalent or Molecular Hydrides
Metallic Hydrides

Related Articles:

Hard Water and Soft Water	Heavy Water	Hydrogen Peroxide
Chemical Properties of Water	Physical Properties of Water	Barium Hydroxide
Hydrofluoric Acid	Potassium Dihydrogen Phosphate	Potassium Hydrogen Phosphate

Class 11 CBSE Chemistry Study Guides:

NCERT Solutions for Class 11 Chemistry	Important Chemistry Formulas	Chemistry Study Material
Difference between Articles in Chemistry	Important Named Reactions	Chemistry Notes
NCERT Solutions for Class 11 Biology	NCERT Solutions for Class 11 Physics	NCERT Solutions for Class 11 Maths

CBSE CLASS XII Related Questions

1.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.
View Solution
2.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.
View Solution
3.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.
View Solution
4.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.
View Solution
5.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?
View Solution
6.
Under what condition can a bimolecular reaction become kinetically first order?
View Solution

View All

CBSE CLASS XII Previous Year Papers

Chemistry

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Physical and Chemical Classification of Matter

Law of Multiple Proportions: Definition, Examples & Limitations

Discovery of Electron: Characteristics, JJ Thomson experiment, Discovery of cathode rays and Solved Questions

Standard Enthalpy of Formation: Explanation and Bond Dissociation Enthalpy

Dalton’s Atomic Theory: Definition, Postulates, Limitations and Solved Questions

Isomerism: Definition, Examples of Isomer compounds, Types, Sample Questions

Atomic Radius: Definition, Types, Variation, and Periodic Trends of Atomic Radii

Wave Nature of Electromagnetic Radiation: Relation Between Frequency and Energy

Mole Fraction: Definition, Formula, Advantages, Properties

Exothermic Reactions: Definition, Enthalpy Change & Examples

Uncertainty in Measurement: Scientific Notation

Bond Enthalpy: Definition, Average Bond Enthalpies, and Enthalpy of a Reaction

Critical Temperature - Volume, Pressure and Point, Graphical Representation and Sample Questions

Classification of Elements and Periodicity in Properties: Genesis & Types

Dipole Moment: Definition, Formula, Bond Dipole Moment & Examples

Precipitation Reaction: Examples, Properties and Uses

Electronegativity: Explanation, Factors Affecting, and Table

Pauli Exclusion Principle: Explanation, Formulation, Examples, and Applications

Covalent Bond: Definition, Types, Polarization, Properties, Important Questions

Ionic Radius: Definition, Electrical Charge, Trends and Solved Questions

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Degree of Unsaturation Formula: Equation, Calculation, Solved Examples

Effects of Acid Rain: Soil Acidification and Ocean Acidification

Carbanions: Explanation, Occurrence, Properties and Examples

Bond Dissociation Enthalpy: Definition, Effects and Difference

Energies of Orbitals: Aufbau, Principle and Principle Quantum Number

Valence Electrons: Definition, Characteristics & Formula

Atomic Number and Mass number: Isotopes & Properties

Bond Order: Nature, Important Equations and Importance

Buffer Solutions: Preparation, Mechanism, Types, and Uses

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NCERT Solutions for Class 11 Chemistry Chapter 9: Hydrogen

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 9 pdf

NCERT Solutions for Class 11 Chemistry Chapter 9

Class 11 Chemistry Chapter 9 Hydrogen – Important Questions

CBSE CLASS XII Related Questions

1.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

2.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

3.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

4.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

5.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

6.
Under what condition can a bimolecular reaction become kinetically first order?

Comments

dOGVmW

NCERT Solutions for Class 11 Chemistry Chapter 9: Hydrogen

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 9 pdf

NCERT Solutions for Class 11 Chemistry Chapter 9

Class 11 Chemistry Chapter 9 Hydrogen – Important Questions

CBSE CLASS XII Related Questions

1.Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

2.Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

3.61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

4.For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

5.Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

6.Under what condition can a bimolecular reaction become kinetically first order?

Comments

dOGVmW

1.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

2.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

3.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

4.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

5.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

6.
Under what condition can a bimolecular reaction become kinetically first order?