AP EAMCET Engineering 23 Sep 2020 Shift 1 Paper

Given a mixture of 3.2g of methane and 4.4g of carbon dioxide contained a 9dm3 flask at 27∘C.
So, the pressure exerted by the mixture will be, p=‌

n

V

RT=‌

m

M

‌

RT

V

The pressure exerted by the methane gas, pCH4=(‌

3.2mol

16

)
‌

0.0821dm3atm‌K−1mol−1×300K

9dm3

=0.55atm
The pressure exerted by the carbon dioxide gas
pCO2=(‌

4.4mol

44

)
‌

0.0821dm3atm‌K−1mol−1×300K

9dm3

=0.27atm
So, the total pressure exerted
=0.55+0.27=0.82atm