Chemistry - Hydrogen

Name: Chemistry - Hydrogen
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18 Lessons | 2hr 48min | State Board , CBSE & ICSE | Competitive exams like IITJEE, NEET , CET & Foundation

Created bystudi live

Last updated 12/2021

English

What you'll learn

Present informed opinions on the position of hydrogen in the periodic table.
Identify the modes of occurrence and preparation of dihydrogen on a small and commercial scale; describe isotopes of hydrogen
Explain how different elements combine with hydrogen to form ionic, molecular and nonstoichiometric compounds
Describe how an understanding of its properties can lead to the production of useful substances, and new technologies
Understand the structure of water and use the knowledge for explaining physical and chemical properties
Explain how environmental water quality depends on a variety of dissolved substances; difference between 'hard' and 'soft' water and learn about water softening
Acquire the knowledge about heavy water and its importance
Understand the structure of hydrogen peroxide, learn its preparatory methods and properties leading to the manufacture of useful chemicals and cleaning of envir
Understand and use certain terms e.g., electron-deficient, electronprecise, electron-rich, hydrogen economy, hydrogenation etc

Course content

1 section • 18 lectures • 2h 48m total length

Isotopes Allotropes & Molecular Forms of Hydrogen10:44
This lecture explains hydrogen isotopes—protium, deuterium, and tritium—sharing one proton but different neutron counts, forming H2, D2, and T2 molecules. It defines ortho and para hydrogen as two spin-based molecular forms, with ortho favored at room temperature and para at absolute zero, both interconvertible in dynamic equilibrium.
Physical and Chemical Properties of Hydrogen11:00
Hydrogen, the lightest element, has low melting and boiling points; it forms covalent bonds in H2, reacts with nonmetals and metals to form hydrides, and acts as a reducing agent.
Uses of Dihydrogen6:33
Hydrides12:19
Water - Introduction8:38
Explore water as the universal solvent and its three states—ice, liquid water, and steam—alongside rainwater, seawater, and surface water, and how salt content shapes drinking water and resources.
Structure of Water8:10
Chemical Properties of Water13:24
Explore water's chemical properties: neutral pH (7), autoionization to hydronium and hydroxide, high-temperature decomposition to hydrogen and oxygen, and metal and non-metal reactions including hydrolysis.
Hard & Soft Water7:13
Heavy Water9:01
Explore heavy water, an isotope of hydrogen containing deuterium, its preparation by multi-stage electrolysis, fractional distillation, and fractional freezing, and reactions where hydrogen is replaced by deuterium.
Removal of Hardness of Water13:10
Effects and Uses of Heavy Water6:28
Preparation of Hydrogen Peroxide14:00
Physical Properties of Hydrogen Peroxide6:58
Explores properties of hydrogen peroxide, including color, solubility in water and alcohol, boiling point 152 c, freezing point −0.89 c, hydrogen bonding, dielectric constant 93.7, and density 1.45 g/cm3.
Strength of Hydrogen Peroxide6:49
Explore the strength of hydrogen peroxide through three expressions: concentration by volume, concentration by mass (grams per 100 g of solution), and normality based on equivalents.
Concentration of Hydrogen Peroxide and Its Storage6:47
Concentrate hydrogen peroxide from a dilute aqua solution to 30%, then 90%, and finally about 99% using staged heating, reduced-pressure distillation, and crystallization; store in ethylene bottles refrigerated.
Uses of Hydrogen Peroxide8:04
Discover hydrogen peroxide's dual role as an oxidizing and reducing agent, its use as rocket propellant, germicidal antiseptic, gargling, and a lab reagent for testing titanium and iron.
Resemblance with Alkali Metals and Halogens11:20
Dissimilarities of Hydrogen with Halogens7:48

Requirements

Basic understanding of chemistry and math's

Description

Description

Hydrogen has the simplest atomic structure among all the elements around us in Nature. In atomic form it consists of only one proton and one electron. However, in elemental form it exists as a diatomic (H2) molecule and is called dihydrogen. It forms more compounds than any other

element. Do you know that the global concern related to energy can be overcome to a great extent by the use of hydrogen as a source of energy? In fact, hydrogen is of great industrial importance as you will learn in this unit.

SUMMARY

Hydrogen is the lightest atom with only one electron. Loss of this electron results in an elementary particle, the proton. Thus, it is unique in character. It has three isotopes, namely : protium (1 1H), deuterium (D or 2 1H) and tritium (T or 3 1H). Amongst these three, only tritium is radioactive. Inspite of its resemblance both with alkali metals and halogens, it occupies a separate position in the periodic table because of its unique properties.

Hydrogen is the most abundant element in the universe. In the free state it is almost not found in the earth’s atmosphere. However, in the combined state, it is the third most abundant element on the earth’s surface.

Dihydrogen on the industrial scale is prepared by the water-gas shift reaction from petrochemicals. It is obtained as a byproduct by the electrolysis of brine.

Course Content

Uses of Dihydrogen
Uses of Hydrogen Peroxide
Resemblance with Alkali Metals and Halogens
Isotopes ,Allotropes & Molecular forms of Hydrogen
Water - Introduction
Physical and Chemical Properties of Hydrogen
Hydrides
Chemical properties of water
Physical Properties of Hydrogen Peroxide
Strenth of Hydrogen peroxide
Structure of Water
Effects and Uses of Heavy Water
Preparation of Hydrogen Peroxide
Heavy Water
Hard & Soft Water
Removal of Hardness of Water
Dissimilarities of hydrogen with halogens
Concentration of Hydrogen peroxide ans its storage

Who this course is for:

Chemistry enthusiast.
Beginners in Chemistry.
IIT-JEE & NEET aspirants