Question

one example of decomposition reaction is endothermic reaction

Answer 1

A compound decomposes (i.e.,"splits-up") into two or more compounds and/or elements. Forexample mercury(II) oxide will, upon heating, decompose into mercury metal and oxygen: Since heat had to be added to make thisreaction go, it is an endothermic reaction. Most decomposition reactions are endothermic.

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