Home
Class 11
CHEMISTRY
3.7 g of a gas at 25^(@)C occupied the s...

`3.7 g` of a gas at `25^(@)C` occupied the same volume as `0.184 g` of hydrogen at `17^(@)C` and at the same pressure. The molecular mass of the gas is

A

`0.024`

B

`39.14`

C

`41.33`

D

`59.14`

Text Solution

Verified by Experts

The correct Answer is:
C
For hydrogen, `w= 0.184g, T= 17+273= 290K, M= 2`
From `pV= (w)/(M)RT= (0.184)/(2)xx R xx 290" ""……….."(i)`
For unknown gas, `w= 3.7g, T= 25+273= 298K, M= ?`
`pV= (3.7)/(M)xx R xx 298" ""…………"(ii)`
From Eqs. (i) and (ii) `(3.7)/(M) xx R xx 298= (0.184)/(2)xx R xx 290" or "M= (23.7xx 298xx 2)/(0.184xx 290)= 41.33`.
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

2.9g of a gas 95^@C occupied the same volume as 0.184g of H_2 at 17^@C at the same pressure. What is the molar mass of the gas?

Calculate the volume of 20 g of hydrogen gas at NTP.

Knowledge Check

  • 7.5 g of a gas occupy 5.6 litres of volume at STP.The gas is

    A
    `NO`
    B
    `N_(2)O`
    C
    `CO`
    D
    `CO_2`

  • Boron forms a variety of unusual compounds with hydrogen. Achemist isolated 6.3 mg of one of the boron hybrides in a glass bulb with a volume of 385 mL" at "25^(@)C and a bulb pressure of 11 torr. the molecular mass of the boron hybride in g mol^(-1) is

    A
    `3.68`
    B
    `27.6`
    C
    `36.35`
    D
    `56.52`

  • Boron forms a variety of unusual compounds with hydrogen. A chemist isolated 6.3 mg of one of the boron hybrides in a glass bulb with a volume of 385 mL at 25^(@) C and a bulb pressure of 11 torr. the molecular mass of the boron hybride in g mol^(-1) is

    A
    3.68
    B
    27.6
    C
    36.35
    D
    56.52

    • Similar Questions

    Explore conceptually related problems

    The density of a certain mass of gas at 27^(@)C and 1 atm pressure is 3.4 g L^(-1) . The density at 327^(@)C and 0.5 atmpressure will be

    The density of gas was found to be 2.92 g L^(-1) at 27° C and 2.0 atm . Calculate the molar mass of the gas.

    The pressure exerted by 12 gofan ideal gas at temperature T(""^(@)C) in a vessel of volume Vis 1 atm. When the temperature is increased by 10^(@)C at the same volume, the pressure increases by 10%. If molecular weight of the gas is 120, the temperature (T^(@)C) and volume (V) are

    The pressure exerted by 12 gof an ideal gas at temperature T( ""^(@) C) in a vessel of volume V is 1 atm. When the temperature is increased by 10^(@)C at the same volume, the pressure increases by 10%. If molecular weight of the gas is 120, the temperature ( T^(@)C ) and volume (V) are

    A Duma's bulb full of air weighs 22.567 g at 20^@C and 755 mm pressure. Full of vapours of a substance at 120^@C and the same pressure, it weighs 22.8617 g. The capacity of the bulb is 200 mL. Find out the molecular mass of the substance. [Density of air=0.00129 g/mL)

    Home
    Profile