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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
States of Matter

NTA Abhyas 2020 · Chemistry · States of Matter

The rate of diffusion of two gases A and B are in the ratio 1:...

The rate of diffusion of two gases A and B are in the ratio 1:4(assume;PA=PB).1: 4\left(assume; {P}_{A} = {P}_{B}\right). In other experiment a mixture contains these gases A and B in the mole ratio 2:3.2: 3. The ratio of mole fraction of the gases A and B in the diffused mixture is –

Options

  1. A1 : 6
  2. B1 : 12
  3. C1 : 18
  4. D1 : 24

Correct answer

A. 1 : 6

Step-by-step solution

1st{1}^{st} experiment ⇒rArB=MBMA=14⇒ \dfrac{{r}_{A}}{{r}_{B}} = \sqrt{\dfrac{{M}_{B}}{{M}_{A}}} = \dfrac{1}{4}
2nd{2}^{nd} experiment ⇒rArB=23MBMA{∵rArB=nanB}⇒ \dfrac{{r}_{A}}{{r}_{B}} = \dfrac{2}{3} \sqrt{\dfrac{{M}_{B}}{{M}_{A}}}\left\{∵ \dfrac{{r}_{A}}{{r}_{B}} = \dfrac{{n}_{a}}{{n}_{B}}\right\}
=23×14=16= \dfrac{2}{3} \times \dfrac{1}{4} = \dfrac{1}{6}
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