Chemistry Exam > Chemistry Videos > Inorganic Chemistry > Halogens & their Key Reactions
Halogens & their Key Reactions Video Lecture | Inorganic Chemistry
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FAQs on Halogens & their Key Reactions Video Lecture - Inorganic Chemistry
| 1. What are the halogens and what are their key reactions? |  |
Ans. The halogens are a group of elements in the periodic table that includes fluorine, chlorine, bromine, iodine, and astatine. Their key reactions include halogenation, where they react with other elements or compounds to form halides, and displacement reactions, where a halogen replaces another halogen in a compound.
| 2. How do halogens react with metals? | |
Ans. Halogens react with metals through a displacement reaction, where the halogen replaces the metal in a compound. For example, chlorine can displace bromine from sodium bromide to form sodium chloride and bromine gas.
| 3. What is halogenation and why is it important? | |
Ans. Halogenation is a chemical reaction where a halogen reacts with another element or compound to form a halide. It is important because it is used in various industrial processes, such as the production of plastics, pesticides, and pharmaceuticals. Halogenation also plays a crucial role in organic chemistry, as it can introduce halogen atoms into organic molecules, altering their properties and reactivity.
| 4. How do halogens react with hydrogen? | |
Ans. Halogens can react with hydrogen to form hydrogen halides. This reaction is exothermic and highly exothermic. For example, when chlorine reacts with hydrogen, it forms hydrogen chloride gas.
| 5. What are the properties of halogens and why are they important? | |
Ans. Halogens have several important properties. They are highly reactive, have low melting and boiling points, and are diatomic molecules in their elemental state. They possess a strong tendency to gain an electron and form negatively charged ions. These properties make halogens useful in a variety of applications such as disinfectants, water purification, and as reactants in organic synthesis.
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Dec 31, 2024 Last updated |
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