Specific Gravity Of Gas - Casio fx-7400G PLUS Booklet

EC-5 Specific Gravity of Gas
Exercise
Industrial Chemistry (2) (Specific Gravity of Gas)
Determine the specific gravity of the following gasses at 0°C, 1 atm.
H , He, C
2
Method 1
Divide the molecular weight of
the gas by the average molecu-
lar weight of air, which is 29.0
Method 2
Divide the density of the gas by
the density of air, which is 1.293.
Graphic Calculator Operation
The list function of your graphic calculator can be used to determine that the above two meth-
ods produce similar results.
(1) Calculation Using Method 1
(2) Calculation Using Method 2
H , CI , SO
3 8 2 2
Molecular Weight M
d = M /29.0
0
Density ρ
d = ρ /1.293
0 0
JIKKYO SHUPPAN CO., LTD.: KOGYO KAGAKU (p. 92)
H
2
2
0.0899 0.1785
0
– 38 –
He C H Cl
3 8 2
4 41 71
2.02 3.220
SO
2
64
2.926