MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Volume of Gases and Number of Moles

When 20 ml of...

Question

When 20 ml of mixture of $O_{2}$ and $O_{3}$ is heated, the volume becomes 29 ml and disappears in alkaline pyragallol solution. What is the volume precent of $O_{2}$ in the original mixture?

A

90%

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

10%

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

18%

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

2%

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 10%
Oxygen is soluble in an alkaline pyrogallol solution.
Let the original mixture contains $x m l$ of oxygen and $(20 - x) m l$ of ozone.
$2 O_{3} ⇌ 3 O_{2}$
Thus, $(20 - x) m l$ of ozone will give $\frac{3}{2} (20 - x) = 30 - 1.5 x m l$ of oxygen.
This is equal to $29 - x m l$ of oxygen.
Hence, $30 - 1.5 x m l = 29 - x$ or $x = 2$ .
The volume percentage of oxygen in the mixture is $\frac{2}{20} \times 100 = 10 %$ .

Suggest Corrections

thumbs-up

0

Similar questions

20

ml of a mixture of

O_{2}

O_{3}

is heated, the volume becomes

29 m l

and disappears in alkaline pyragallol solution. What is the volume percent of

O_{2}

in the original mixture?

Q. When 100 ml of

O_{2}

O_{3}

mixture was passed through turpentine, there was a reduction of volume by 20 ml. If 100 ml of such a mixture is heated, what will be the increase in volume?

Q. When 100 ml of

O_{2} - O_{3}

mixture was passed through turpentine oil, there was reduction of volume by 20 ml. If 100 ml of such a mixture is heated, what will be the increase in the volume (ml)? (Write the answer in the form of volume/2)

Q. When 100 ml of a

O_{2} - O_{3}

mixture was passed through turpentine, there was the reduction of volume by 20 ml. If 100ml of such a mixture is heated, what will be the increase in volume?

Q. 40 ml of mixture of

C_{2} H_{2}

and CO is mixed with 100 ml of

O_{2}

gas and the mixture is exploded. The residual gases occupied 104 ml and when these are passed through KOH solution, the volume becomes 48ml. All the volume are at same the temperature and pressure. Determine the composition of the original mixture.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Volume of Gases and Number of Moles

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Volume of Gases and Number of Moles

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon