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Page No 198: - Chapter 7 - P - Block Elements - Intext Solutions - Ncert Solutions class 12 - Chemistry

Updated On 11-02-2025 By Lithanya


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.

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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.