Chemistry - Hydrogen and Its compound Question with Solution | TestHub

ChemistryHydrogen and Its compoundHydrogen and Its compoundMedium2 minQB

ChemistryMediumsingle choice

When water is electrolysed long time the density of water left in reaction vessel is :

Answer:

Solution:

Electrolysis of water:

$2 H_{2} O (l) \to 2 H_{2} (g) + O_{2} (g)$

During electrolysis, H₂ gas and O₂ gas escape from the reaction vessel, while water is consumed.

The mass of water decreases, but the volume decreases proportionally more because gases are removed.

Removal of dissolved gases and formation of more pure water (remaining liquid) causes the density of water left to gradually increase.

Correct Answer: (A) Gradually increases

Stream:JEESubject:ChemistryTopic:Hydrogen and Its compoundSubtopic:Hydrogen and Its compound

⏱ 2mℹ️ Source: QB

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