Question

19): Why is sodium metal never left open in air? (a) It melts at room temperature (C) It reacts with oxygen present in air violently (b) It reacts with moisture present in air violently (dy Both option b and c. with exmplenation​

Answer 1

Answer:

d is the correct answer

Explanation:

because it reacts with both water and oxygen violently

Answer 2

Answer:

In ordinary air, sodium metal reacts to make a sodium hydroxide film, which may rapidly absorb carbon dioxide from the air, forming bicarbonate of soda. Sodium doesn't react with nitrogen, so sodium is typically kept immersed in a nitrogen atmosphere (or in inert liquids such as kerosene or naphtha).

Explanation:

Sodium metal reacts with the oxygen in the air to make sodium oxide, and traces of yellowish sodium peroxide. The sodium oxide formed will then react with water vapour in the air to give sodium hydroxide film. Sodium is a very reactive metal. It reacts with oxygen in the air at temperature, the reaction is very exothermic. to stop this sodium is kept preserved under kerosene. Sodium may be a highly reactive metal that is flammable. It can ignite with a spark at 239 degrees Fahrenheit or 115 degrees Celsius. It also can catch fire without a spark when it reacts with certain substances, like water.

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