When $100 mL$ of an $O_{2} - O_{3}$ mixture was passed through turpentine, there was a reduction in volume by $20 mL$ . If $100 mL$ of such a mixture is heated, what will be the increase in volume (in ml) ?

[Hint: $O_{3}$ is absorbed by turpentine]

50% studentsanswered this correctly

Important Questions on Eudiometry or Gas Analysis

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 3 - Eudiometry or Gas Analysis>PROBLEMS>Q 29

One volume of a compound of carbon, hydrogen and oxygen was exploded with

2.5

volumes of oxygen. The resultant mixture contained

2

volumes of water vapour and

2

volumes of carbon dioxide. All the volumes were measured in identical conditions. Determine the formula of the compound.

HARD

JEE Main

IMPORTANT

Modern Approach to Chemical Calculations>Chapter 3 - Eudiometry or Gas Analysis>PROBLEMS>Q 30

$5.22 \times 10^{- 4} mol$ of a gas containing $H_{2}, O_{2}$ and $N_{2}$ exerted a pressure of $67.4 mm$ in a certain standard volume. The gas was passed over a hot platinum filament which combined $H_{2}$ and $O_{2}$ into $H_{2} O$ which was frozen out. When the gas was returned to the same volume, the pressure was $14.3 mm$ . Extra oxygen was added to increase the pressure to $44.3 mm$ . The combustion was repeated, after which the pressure read $32.9 mm$ . What was the mole fraction of $H_{2}, O_{2}$ and $N_{2}$ in the gas sample?

[Hint: $2$ volumes of $H_{2}$ combine with $1$ volume of $O_{2}$ . In the first combustion, $H_{2}$ is in excess, while in the second one, $O_{2}$ is in excess]