+2 votes

What is Specific Gravity of Gas?

asked Mar 25, 2014 in Process by gagonza (3,020 points)
Specific gravity is the ratio of the density of a liquid to the density of water, then what is Specific Gravity of Gas?

2 Answers

+1 vote
answered Mar 29, 2014 by Dan01 (1,560 points) | selected Apr 17, 2014 by Normandy
Best answer
Specific gravity of gas is ratio of molecular weight of gas to that of air.
0 votes
answered Apr 18, 2014 by Normandy (21,040 points)

Specific Gravity of a gas can be calculated as

\(SG = {\rho \over \rho air}\)

SG = specific gravity of Gas
ρ = density of gas (kg/m3)
ρair = density of air (kg/m3)
* In a normal condition, air is defined at 20oC and 1 atm and density of air is 1.205 kg/m3 is used.