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Alkali metals are an essential group of elements that find numerous applications in various industrial and commercial fields. Among the seven chemical elements that fall under this group, sodium is one of the most widely utilized elements due to its unique properties. In this article, we explore why sodium metal is stored in kerosene, and the chemical properties of alkali metals.
Why is Sodium Metal Stored in Kerosene?
Sodium metal is highly reactive in air and reacts vigorously with water, producing hydrogen gas and sodium hydroxide. To prevent this, it is stored in kerosene, which acts as a protective medium. The kerosene essentially creates a barrier between the sodium and air, preventing it from reacting and catching fire. When sodium needs to be used, it is removed from the kerosene and washed with a solvent like ethanol to remove any remaining kerosene. Essentially, sodium is stored in kerosene for safety purposes, as it is a highly reactive element that can cause fires and explosions.
Chemical Properties of Alkali Metals
Alkali metals are familar to chemistry students for their highly reactive nature. The alkali metals share common characteristics, including their low density, low melting and boiling points and high reactivity. Here are some of the chemical properties of alkali metals in more detail:
Reactivity
Alkali metals are highly reactive due to their low ionization energy needed to remove an electron from their outer-shell. This reactivity increases from lithium to francium, making such metals dangerous to handle. In general, these metals react with non-metals to form ionic compounds.
Melting and Boiling Points
Alkali metals have low melting and boiling points, with francium having the lowest among all elements. This makes them easy to melt and boil, making them useful in various industrial processes.
Density
Alkali metals have low density, with lithium being the least dense of all metals. This property makes them useful in making lightweight alloys, such as those used in the aerospace and automotive industries.
Flame Test
Alkali metals produce characteristic bright-colored flames when exposed to heat. This allows chemical analysts to identify the presence of specific metals in a compound. Sodium, for instance, produces a yellow color in a flame test.
In conclusion, alkali metals have unique properties that make them significant elements in various industries. Sodium, one of the most widely used alkali metals, is stored in kerosene due to its highly reactive nature. Understanding the chemical properties of alkali metals is essential in appreciating their significance and potential applications. If you are looking for Assertion (A): Sodium metal is stored under kerosene. Reason (R): you’ve came to the right place. We have 5 Pictures about Assertion (A): Sodium metal is stored under kerosene. Reason (R): like Assertion (A): Sodium metal is stored under kerosene. Reason (R):, MP: Over 53,000 litres of illegally stored blue kerosene recovered in and also Assertion (A): Sodium metal is stored under kerosene. Reason (R):. Here you go:
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