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Vapour density of a compound is defined ...

Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure.
Vapour density`=("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP")`
`=(Mw)/(2)`
i.e., Molecular mass of gas=Vapour density `xx2`
Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure.
The vapour density of a mixture containing `NO_(2)` and `N_(2)O_(4)` is 38.3 at `27^(@)C`. the moles of `NO_(2)` in 100 moles of mixture are:

A

33.48

B

53.52

C

38.3

D

76.6

Text Solution

Verified by Experts

The correct Answer is:
C
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Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Vapour density of a metal chloride is 66. its oxide contains 53% metal. the atomic mass of the metal is:

Knowledge Check

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. At STP, 5.6 litre of a gas weighs 60g. the vapour density of gas is:

    A
    60
    B
    120
    C
    30
    D
    240

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Which of the following two substances have same vapour density?

    A
    Glucose
    B
    Fructose
    C
    Sucrose
    D
    Starch.

  • Vapour density of a compound is defined as the ratio of mass of a certain volume of gas to the mass of the same volume of hydrogen gas under conditions of temperature and pressure. Vapour density =("Mass of certain of gas"(22.4L)"at STP")/("Mass of same volume of" H_(2) "gas"(22.4L)"at STP") =(Mw)/(2) i.e., Molecular mass of gas=Vapour density xx2 Vapour density is a unitless quantity it is unaffected by variation of temperature and pressure. Let NH_(4)HS(s)hArrNH_(3)(g)+H_(2)S(g) The vapour density of the mixture will be:

    A
    equal to that of `NH_(4)HS`
    B
    lesser than that of `NH_(4)HS`
    C
    greater than that of `NH_(4)HS`
    D
    cannot be predicted.

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