A gas is collected at a pressure of 95 cm of Hg and a temperature of 50 degree centegrade.To what temperature should it be cooled so that it occupies a volume which is 80% of its original volume when the pressure of the gas is 90 cm of Hg.

Asked by Pradeep | 31st Oct, 2017, 08:20: PM

Expert Answer:

As per gas laws

begin mathsize 12px style fraction numerator p subscript 1 v subscript 1 over denominator T subscript 1 end fraction space equals space fraction numerator p subscript 2 v subscript 2 over denominator T subscript 2 end fraction

fraction numerator 95 cross times v 1 over denominator 323 end fraction space equals space fraction numerator 90 cross times 0.8 cross times v 1 over denominator T subscript 2 end fraction

H e n c e space T subscript 2 equals space fraction numerator 90 cross times 0.8 cross times 323 over denominator 95 end fraction space equals space 244.8 space K
end style

Answered by Ramandeep | 1st Nov, 2017, 11:26: AM