Consider the following reaction : 2HgO ⎯⎯→ 2Hg + O₂ The respective sta

Consider the following reaction :
2HgO ⎯⎯→ 2Hg + O₂
The respective state of HgO, Hg and O₂ in the above reaction is

Liquid, solid, gas

Solid, solid, gas

Liquid, solid, liquid

Solid, liquid, gas

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Answer is Wrong!

This question was previously asked in

UPSC NDA-2 – 2023

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Mercuric oxide (HgO) is a solid compound at room temperature. Mercury (Hg) is the only metal that exists as a liquid at room temperature. Oxygen (O₂) is a gas at room temperature. Therefore, the respective states of HgO, Hg, and O₂ are solid, liquid, and gas.

The physical states of substances at standard temperature and pressure (or implied conditions) are important in chemical reactions. Mercury is unique among metals in being liquid at room temperature.

This reaction represents the thermal decomposition of mercuric oxide. Heating HgO breaks it down into its constituent elements, mercury and oxygen. The states indicated correspond to the stable forms of these substances under normal conditions after the reaction.

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