Question

explain why NaOH crystals are kept in air tight bottle​

Answer 1

Answer:

because it absorb moisture and co2.

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Answer 2

Answer:

Pure sodium hydroxide is a white solid, available in pellets, flakes, granules, and also 50% saturated solution. It is deliquescent and also readily absorbs carbon dioxide from the air, so it should be stored in an airtight container. It is very soluble in water with liberation of heat.