What could the pool owner do to reduce the acidity of the pool?

Add a base  

Explanation:

Two of the acids that may cause high pool acidity are hydrochloric acid (HCl) and hypochlorous acid (HOCl).

To reduce the acidity in the pool, they must add a base to neutralize the excess acid.

A commonly used base is sodium carbonate — Na₂CO₃ or washing soda. The equations for the reactions are:

Na₂CO₃(aq) + 2HCl(aq) ⟶ 2NaCl(aq) + H₂CO₃(aq)

Na₂CO₃ (aq) + 2HOCl(aq) ⟶ 2NaOCl(aq) + H₂CO₃(aq)

The initially formed carbonic acid will decompose into carbon dioxide and water.

H₂CO₃(aq) ⇌ CO₂(aq) + H₂O(ℓ)

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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