Test Index

Polymers

Section: Chemistry

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Question : 2 of 8

Marks: +1, -0

The monomer (

X

) involved in the synthesis of Nylon 6,6 gives positive carbylamine test. If 10 moles of

X

are analyzed using Dumas method, the amount (in grams) of nitrogen gas evolved is

\;\;\;\;

Use: Atomic mass of N (in amu) = 14

[JEE Adv 2025 P1]

Your Answer:

Solution:

Monomer of Nylon

6,6 \Rightarrow

Adipic acid

+

hexamethylene diamine → +ve carbylamine test

\mathrm{H}_2\mathrm{N}(\mathrm{CH}_2)_6\mathrm{NH}_2\underset{\;\text{10 mole}\;}{\text{1 mole}\;}\xrightarrow{\;\text{Dumas}\;}\mathrm{N}\underset{\;\text{10 mole}\;}{\underset{\text{1 mole}\;}{_2}}

Mass of

\mathrm{N}_2

formed

=10 \times 28 = 280\ \mathrm{g}

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