Question

give the observation and balanced equation when mercuric oxide is heated​

Answer 1

Answer:

A decomposition reaction occurs when a chemical compound is broken down into elements or smaller compounds. The generalised equation for a decomposition reaction is:

AB → A + B

Mercury oxide when heated in air will decompose to give elemental mercury, a liquid metal, and oxygen gas. It is mercury (II) oxide or mercury (I) oxide.

The balanced equation for mercury (II) oxide:

2HgO + heat ---> 2Hg + O2

Adding state symbols,

2HgO (s) + heat ---> 2Hg (l) + O2 (g)

The balanced equation for mercury (I) oxide:

2 (Hg2O) + heat ---> 4Hg + O2

Adding state symbols:

2(Hg2O) (s) + heat ---> 4Hg (l) + O2 (g)

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