Home
Class 11
CHEMISTRY
An open flask contains air at 27^(@)C Ca...

An open flask contains air at `27^(@)C` Calculate the temperature at which it should be heated so that
(a) `(1)/(3)` rd of air measured at `27^(@)C` escapes out

A

`177 .^(@)C`

B

`100 .^(@)C`

C

`300 .^(@)C`

D

`150 .^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
Let initial number of moles of air at `27 .^(@)C(300 K)=n`
At temperature T K, the no. of moles left `=n-(n)/(3)=(2n)/(3)`
At constant pressure and volume, `n_(1)T_(1)=n_(2)T_(2)`
`n xx300=(2n)/(3)xxT rArr T=450 K` or `177 .^(@)C`
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    NCERT FINGERTIPS|Exercise Ideal Gas Equation|33 Videos

  • STATES OF MATTER

    NCERT FINGERTIPS|Exercise Kinetic Energy And Molecular Speeds|4 Videos

  • STATES OF MATTER

    NCERT FINGERTIPS|Exercise MCQs|3 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    NCERT FINGERTIPS|Exercise Assertion And Reason|10 Videos

  • STRUCTURE OF ATOM

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

An open flask contains air at 27^(@)C . Calculate the fraction of air that would be expelled out, at 477^(@)C .

Air is filled in a container of 333K. Calculate the tempeture upto which it should be heated so that 1//3 rd of air may escope out of th vessel.

An open mouthed bottle contains a gas at 60^(@)C the temperature to which the bottle should be heated so that 1/4 of the mass of the gas may leave is,

Calculate the temperature at which the rms velocity of SO_(2) is the same as that of oxygen at 27^(@)C .

The temperature at which the speed of sound in air becomes double of its value at 27^(@)C is

A gas is filled in a vessel at 27^@ C . To what temperature should it be heated in order that (1)/(3) rd of the gas may escape out of the vessel?