How is heat of neutralization and heat of solution used in every day life? What is the importance.

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Generally the heat of neutralization and heat of solution is a problem to get rid of.

We neutralize a base solution and need to wait for the solution to cool before we can sent it to the waste treatment plant. High temperatures there can disrupt their process and kill the digesting microbes..

Solar heat storage may be one area.. energy is added to the solution to disolve more salt
when the solution cools the solubility of the salt decreases and releases heat back to the environment.

Small hand warmers the sealed bag with solution type use this effect as well. A super saturated solution releases heat when the crystals are again formed..

hope this helps.