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Is the dissolution of a gas in a solvent exothermic?

Answer 1

Now generally, to degas a solvent, typically water, WE BOIL it......

And we can represent this by the equation:

#"Dissolved gas in water" +Deltararr"Degassed water"+"Gas in air"#

Because we have had to supply energy to break up the solute/solvent interactions, the reaction as written is ENDOTHERMIC. It follows that the initial dissolution of the gas in the solvent was EXOTHERMIC. Does you agree?

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Answer 2

Xavier Avery

The dissolution of a gas in a solvent can be exothermic or endothermic depending on the specific gas-solvent combination.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.