The ratio of volumes occupied by 1 mole $O_{2}$ and 1 mole $O_{3}$ under identical conditions of temperature and pressure is:

1 : 1

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1 : 2

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1 : 3

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2 : 1

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Solution

The correct option is A 1 : 1
From Avogadro's hypothesis volume is directly proportional to the number of moles of gases at constant temperature & pressure.

$∴ V \propto n$ ( at constant T & P) here the nature of gas is not significant, only no. of moles matter.

i.e. no matter what are gases ( but it should behave ideally).

$∴$ For equal no. of moles of $O_{2}$ and $O_{3}$ ,

$∴ \frac{V_{o_{2}}}{V_{O_{3}}} = \frac{n_{O_{2}}}{n_{O_{3}}} = \frac{1}{1}$

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The ratio of volumes occupied by 1 mole O2 and 1 mole O3 under identical conditions of temperature and pressure is:

The ratio of volumes occupied by 1 mole $O_{2}$ and 1 mole $O_{3}$ under identical conditions of temperature and pressure is: