The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air.
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Correct Answer: Option C
Explanation:
RH
=
mass of water vapour in volume of air
mass of water vapour for saturation
Â
RH
=
m
M
=
0.05
0.15
×
100
=
5
0.15
=
500
15
=
33.33%
RH
=
mass of water vapour in volume of air
mass of water vapour for saturation
Â
RH
=
m
M
=
0.05
0.15
×
100
=
5
0.15
=
500
15
=
33.33%