QJEEM14Ch3426: JEE Main 2014 Chemistry - Class 11 JEEM14Ch3426 Solution: The ratio of masses of oxygen and nitrogen in a particular…

Question

Verified Solution • 2025–26 Session moderate

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is:

Accepted Answer

Given ratio of mass of O₂ and N₂ = 1 : 4
Let mass of O₂ = w
and mass of N₂ = 4w

∴

Number of moles of O₂ =

\frac{w}{32}

Number of molecules of O₂ =

\frac{w}{32}

\times

N_A

Number of moles of N₂ =

\frac{4 w}{28}

Number of molecules of N₂ =

\frac{4 w}{28}

\times

N_A

∴

Ratio of molecules of O₂ and N₂
=

\frac{w}{32}

\times

N_A :

\frac{4 w}{28}

\times

N_A

= 7 : 32

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