Question

Calculate the volume occupied by 2 g of hydrogen at 27°C and 4 atmospheric pressure, if at STP it occupies 22.4 litres.

Answer 1

Answer:

Answer is 6.1575dm^3 or 6.1575litre [1dm^3=1litre]

Explanation:

Mass of H^2 given =2g

Molar mass of H^2=2.016

No. Of moles = 2/2.016=1 g/mol

Volume =?

As,

PV=nRT

V=nRT/P

P=4 atm

T=27 C°=273+27=300k

R=0.0821dm^3_atm/k_mol

n=1g/mol

So,

V=1×0.0821×300/4=6.1575litre