Download HW # 5 - KFUPM Faculty List

DUE
CHE 203
HW#5
MONDAY APRIL 18,2011
Q1)
Air at 300 C and 60% Relative humidity .Find the following
a) Absolute humidity
b) Wetbulb temperature
c) Humid volume
d) Enthalpy
e) At what temperature condensation will start
Q2)
350 Kg/min of dry air enters a dryer and leaves the dryer at 500C and wetbulb
temperature 270 C .Then the air enters a condenser and leaves the condenser at 10 0
C .All the process is at 1 atm. Find the following
a) Relative humidity ,Absolute humidity ,Humid volume ,Enthalpy
leaving the dryer
of the air
b) Relative humidity ,Absolute humidity ,Humid volume ,Enthalpy
leaving the condenser
of the air
c) The rate of water added to the air in the dryer
d) The rate of water condensed in the condenser
e) The rate of heat removal in the condenser
Q3)
196 grams of sulfuric acid at 250C are mixed with 360 grams of water at 250 C to
form a solution at 250 C. Find the amount of heat which should be removed in Kj
Q4)
2 moles of solid NaOH at 250 C are dissolved in 10 moles of liquid water at 400C
in a flask of a mass 200 grams .The heat capacity ( CP ) of the flask and the solution
is 3.5 J/g.0c .The whole mixing is adiabatic .Calculate the final temperature