Hydrogen - Free PDF Download
Free PDF download of NCERT Exemplar for Class 11 Chemistry Chapter 9 - Hydrogen solved by expert Chemistry teachers on Vedantu.com as per NCERT (CBSE) Book guidelines. All Chapter 9 - Hydrogen Exercise questions with solutions to help you to revise complete syllabus and score more marks in your Examinations.
Question: How to download NCERT Exemplar for Class 11 Chemistry Chapter 7 Redox Reactions?
Answer: Students can download NCERT Exemplar for Class 11 Chemistry Chapter 7 Redox Reactions at Vedantu’s official website.
Hydrogen is the first and a very special element of the periodic table. It is the lightest atom on earth with just a single electron. With its 3 stable isotopes being protium, deuterium, and tritium, Hydrogen is the most abundant element in the universe.
Class 12 students can easily bring full marks from this Chapter by solving NCERT Exercises thoroughly and solving all questions from previous year papers. This will help them to create an Exam-like situation and assist them in breaking down the question-asking pattern.
FAQs on NCERT Exemplar for Class 11 Chemistry Chapter-9 (Book Solutions)
1. What are the uses of Deuterium and Tritium?
Deuterium consists of one proton and one neutron in its nucleus. Deuterium is not radioactive and is used in chemical analysis and for preparing solvents for Hydrogen. Some of the other uses of Deuterium are-
Preparing Essential Drugs
Building Nuclear weapons
Preparing prototype fusion reactors
Tritium comprises two neutrons and one proton in its nucleus. Some of the uses of Tritium are-
Used to control nuclear fusion
Tritium in Hydrogen bomb secondaries
Preparation of Nuclear weapons
Oceanic transient tracer
2. What are Metallic Hydrides?
Metal Hydride is the Hydrogen compound that forms a bond with other metal elements. Mostly, The bond is covalent type, but sometimes the Hydrides are formed with the ionic bonds. Metal Hydrides are usually formed by transition metals and are mostly hard, have high melting & boiling points, and are non-stoichiometric. For Example - Cadmium, Magnesium, etc. Metal Hydrides are also called Interstitial Hydrides. These are formed when the Hydrogen molecule reacts with the d-block or f-block elements. The metals of chemical groups 7, 8, and 9 can never form Hydrides. They do conduct electricity and heat but not to the extent of other metals.
3. Distinguish between Hydration and Hydrolysis.
The major difference between Hydrolysis and Hydration is that Hydrolysis is called the process of breaking compounds using water, whereas Hydration is called the electrophilic addition reaction with no cleavage of the original molecule. In other words, the process of Hydration leaves the non-water components intact. Hydrolysis is the breakdown procedure of molecules while it reacts with water. This is the major difference between Hydrolysis and Hydration. Class 12 students can learn more about Hydration and Hydrolysis at Vedantu's website.
4. What are the uses of Hydrides?
The compounds of Hydrogen with low electronegative elements are called Hydrides. Whenever Hydrogen reacts with any element, the product formed is considered to be a Hydride. Some uses of Hydrides are-
Hybrids are used as reducing agents in many chemical industries.
Hydrides are highly significant in battery storage technologies. For Example- Nickel Hydride Batteries.
Hydrides have been used as drying agents for a long time
Hydrides are also used as strong bases in organic synthesis.
Metal Hydrides are used for their Hydrogen storage, compressors' capabilities, and heat storage.
5. What are the categories of Hydrides?
The compounds of Hydrogen with low electronegative elements are known as Hydrides. Hydrides are divided into 3 parts-
Ionic Hydrides- Ionic Hydrides are constructed when a Hydrogen molecule reacts with highly electropositive s-block elements. In solid-state, the ionic Hydrides are crystalline, non-conducting, and non-volatile. Ionic Hydrides conduct electricity in a liquid state. Ionic Hydrides on electrolysis liberate Hydrogen gas at the anode. These are also called Saline Hydrides.
Covalent Hydrides- Covalent Hydrides are constructed when the Hydrogen reacts with other identical electronegative elements like Silicon, Cabon, etc. Covalent Hydrides are compounds that are formed when Hydrogen is reacted with non-metals. The compound transmits a covalent bond and is either a volatile or non-volatile compound. Covalent Hydrides can also be liquids or gases.
Metallic Hydrides- Metal Hydrides are Hydrogen compounds that form a bond with another metal element. The bond is a mostly covalent type but occasionally the Hydrides are constructed with ionic bonds. These are usually formed by transition metals and are mostly hard in nature, non-stoichiometric, high melting, and boiling points.