Tailing of mercury is ___________ redox change. - Vidyadip

MCQ

Tailing of mercury is ___________ redox change.

A
Intramolecular.
B
Intermolecular.
C
Disproportion.
D
None.

✓

Answer

Intermolecular.

Explanation:

When ozone is passed through mercury, mercurous oxide (Hg2O) is formed.

Due to this, mercury loses its meniscus and starts sticking to the glass.

This phenomenon is known as Tailing of mercury.

2Hg + O₃→ Hg₂O + O₂.

In this reaction, the oxidation number of mercury changes from 0 to +1. Thus, it is oxidized.

The oxidation number of oxygen changes from 0 to -2. Thus, it is reduced.

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