Question

JEE ADVANCE PRACTICE SERIES (CHE) :-

Que1 :- Write down the monomer of PHBV.

Que 2. Write down the chemical reaction of Concentrated nitric acid with iodine vapour.

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Answer 1

Answer:

Explanation:

1. The monomers, 3-hydroxybutanoic acid and 3-hydroxypentanoic acid, are the monomers of PHBV.

2. Iodine2 or I2 +  HNO3 = HIO3 + NO2 + H2O

Answer 2

Answer-1 :

★ Monomers of PHBV (Poly ß-hydroxy butyrate-co-ß-hydroxy valerate) are

• 3-Hydroxybutanoic acid
• 3-Hydroxypentanoic acid

Answer-2 :

★ Pure HNO₃ is colourless, however impure HNO₃ is yellow in colour due to soluble oxides of nitrogen and in the gaseous state it exists as a planar molecule$.$

★ It acts as a strong oxidising agent. Non-metals get converted into highest oxy acids by hot conc. HNO₃ and NO₂ gas is evolved.

• S → H₂SO₄
• I₂ → HIO₃
• Sn → H₂SnO₃
• P → H₃PO₄

Balanced chemical reaction :

I₂+10HNO₃ ➠ 2HIO₃+10NO₂+4H₂O

Cheers!