Page No 198: - Chapter 7 P Block Elements Intext Solutions class 12 ncert solutions Chemistry - SaraNextGen [2024-2025]

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On April 24, 2024, 11:35 AM

Question 7.29:

Give the reason for bleaching action of Cl₂.

Answer:

When chlorine reacts with water, it produces nascent oxygen. This nascent oxygen then combines with the coloured substances present in the organic matter to oxide them into colourless substances.

Coloured substances + [O] → Oxidized colourless substance

Question 7.30:

Name two poisonous gases which can be prepared from chlorine gas.

Answer:

Two poisonous gases that can be prepared from chlorine gas are

(i) Phosgene (COCl₂)

(ii) Mustard gas (ClCH₂CH₂SCH₂CH₂Cl)

Page No 202:

Question 7.31:

Why is ICl more reactive than I₂?

Answer:

ICl is more reactive than I₂ because I−Cl bond in ICl is weaker than I−I bond in I₂.