Question

1.7g of a unknown gas occupied 2.24 l at NTP. Calculate it's molecular mass and identify the gas

Answer 1

Molecular mass of the gas is 18.24 gram per mol.

Solution:- NTP means normal temperature(293 K) and pressure(1 atm). At NTP, the volume of 1 mol of a gas is 24.04 L.

Now, with the help of this, the moles of the gas for it's 2.24 L as:

= 0.0932 mol

On dividing the given grams by the moles we can calculate the molecular mass of the gas.

molecular mass =

=

So, the molecular mass of the gas is 18.24 gram per mol.

Answer 2

pv=nRT v=2 .24lt ,n=1.7/x ,R =0.0821 ,T =300k ,p=1 atm solve this i hope you got your ans