Why is oxygen collected over mecury if is required dry
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Explanation:
Oxygen is usually collected over water because the solubility of the gas in water is not high. If the gas is needed dry, then it can be passed through a drying agent, like anhydrous calcium chloride or quick lime, or concentrated sulphuric acid, and then collected over mercury.
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Hola !
Usually oxygen is collected over mercury if it is required in dry quantity because solubility of water is low.
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# Astro
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