Chemical Engineering

Material Balance Problems Involving Partial Saturation

Question 1
Marks : +2 | -2
Pass Ratio : 100%
A reaction has produced 0.4 mole of water vapor and 1 liter of bone dry air at 27oC and 5 atm, what is the humidity?
85%
143%
178%
200%
Explanation:
Moles of bone dry air = 0.2, => Humidity = 0.4/0.2*100 = 200%.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
50 mole of CH4 reacts completely with excess air, if 25 liter of bone dry air is produced at 27oC and 25 atm, what is the humidity?
20%
80%
200%
400%
Explanation:
Moles of bone dry air = 25, moles of H2O produced = 100, => humidity = 100/25*100 = 400%.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
A reaction has produced 1.5 moles of water and 2 liter of bone dry air at 27oC and 25 atm, what is the humidity?
5%
25%
50%
75%
Explanation:
Moles of bone dry air = 2, => Humidity = 1.5/2*100 = 75%.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
25 mole of CH4 reacts completely with excess air, if 25 liter of bone dry air is produced at 27oC and 5 atm, what is the humidity?
10%
100%
500%
1000%
Explanation:
Moles of bone dry air = 5, moles of H2O produced = 50, => humidity = 50/5*100 = 1000%.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
A reaction has produced 45 moles of water and 25 liter of bone dry air at 27oC and 25 atm, what is the humidity?
25%
104%
180%
209%
Explanation:
Moles of bone dry air = 25, => Humidity = 45/25*100 = 180%.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
1 mole of CH4 reacts completely with excess air, if 5 liter of bone dry air is produced at 27oC and 5 atm, what is the humidity?
25%
50%
100%
200%
Explanation:
Moles of bone dry air = 1, moles of H2O produced = 2, => humidity = 2/1*100 = 200%.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
A reaction has produced 1 mole of water vapor and 5 liter of bone dry air at 27oC and 5 atm, what is the humidity?
100%
104%
115%
169%
Explanation:
Moles of bone dry air = 1, => Humidity = 1/1*100 = 100%.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
2 mole of CH4 reacts completely with excess air, if 25 liter of bone dry air is produced at 27oC and 5 atm, what is the humidity?
45%
80%
95%
143%
Explanation:
Moles of bone dry air = 5, moles of H2O produced = 4, => humidity = 4/5*100 = 80%.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
0.1 mole of CH4 reacts completely with excess air, if 1 liter of bone dry air is produced at 27oC and 25 atm, what is the humidity?
4%
15%
20%
52%
Explanation:
Moles of bone dry air = 1, moles of H2O produced = 0.2, => humidity = 0.2/1*100 = 20%.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
A reaction has produced 5 moles of water vapor and 10 liter bone dry air at 27oC and 15 atm, what is the humidity?
24%
49%
83%
106%
Explanation:
Moles of bone dry air = 6, => humidity = 5/6*100 = 83%.