|Jul29-09, 04:27 AM||#1|
Question on relative humidity
1. The problem statement, all variables and given/known data
Temperature of a closed room is 15 degree celsius (T288).Relative humidity(RH)at 15degree celsius =60%
Find the RH when the temperature is 20 degrees.
S.V.P at 15 degrees celsius=12.67mmHg
SVP at 20 degree celsius = 17.36mmHg
2. Relevant equations
3. The attempt at a solution
RH= [Partial pressure at 15 degree celsius(P15)/SVP at 15]*100%
P15V = m1rT288 ----------(1)
I get the answer when i take m1 as equal to m2,but I don't understand why they should be equal.
Doesn't m,the mass of water vapour present in the room increase with temperature?
|Jul29-09, 06:31 AM||#2|
it's a closed room!Where would the extra mass come from?
|Jul29-09, 06:34 AM||#3|
Thank you very much!
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