Explain the term Exothermic reaction. - Vidyadip

Question

Explain the term Exothermic reaction.

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Answer

Exothermic reaction: The process in which heat is given out is called an exothermic reaction.
When $NaOH _{( s )}$ dissolves in water, there is evolution of heat leading to a rise in temperature.
$
NOH _{( s )}+ H _3 O _{( l )} \rightarrow NaOH _{( aq )}+\text { Heat }
$

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