PBE 2-checal

Question 1

The synthesis of ammonia proceeds according
What is the LR?
%x’s reactant?
% conversion?

Answer 1

N2

16. 17%
17. 97%

Question 2

A continuous still is to be used to separate acetic acid. What are the values of the ffg?P=350 kg/hr HAc
Xbenzene?
F?
W?

Answer 2

Xbenzene= 0.383
F=811.13
W=461.13

Question 3

Five pounds of bismuth is heated along with one pound of sulfur.
LR?
%x’s?
%conversion ?

Answer 3

Sulfur
14.83%
70%

Question 4

Moist hydrogen containing 4 mole percent water is burnt completely in a furnace.. Calculate order analysis?

Answer 4

O2=6.05%

N2=93.95%

Question 5

Gypsum (plaster of Paris:CaSO42H20) is produced by the reaction of calcium carbonate and sulfuric acid.
Kg anhydrous gypsum produced?
Kg H2SO4 required?
Kg CO2 produced?

Answer 5

6600
4920
2166.24

Question 6

Perchloric acid (HClO4) can be prepared as shown in the diagram…
Overall conversion of BaClO4
Lb of HClO4 leaving the searator per pound of feed
Lb of H2SO4 entering the reactor
Per pass conversion of BA(ClO4)2

Answer 6

100%
0.64
10700
0.8

Question 7

A contact sulfuric acid plant
Tons/day 95.9% reqd?
Tons/day of 97.3%reqd?
Tons/day 98% produced?

Answer 7

2060
6470
2240

Question 8

TiCl4….
KgTiO2 ore fed?
Kg45% wt. HCl fed?
Ratio of recycle stream to fresh TiO2 ore?

Answer 8

0. 54
1. 05
2. 26

Question 9

A gas analyzes 60% methane and 40%ethylene
Calc. Pressure.
Assuming mixture obeys ideal gas
Pseudo critical method

Answer 9

30400kpa

26000kpa

Question 10

Calculate the vapor pressure of benzene at 50°C usingAntpine eqn. And compare with experimental value.

Answer 10

P=36090.71Pa

T=353.27 K

Question 11

A gas saturated with water vapor in tank has volume of 1L.
Volume of gas?
Grams of water vapor?

Answer 11

V= 0.97L
m= 0.015 g

Question 12

If sufficient water is placed in a vessel containing a dry gas. What willbe the absolute pressure in the vessel?

Answer 12

Portal= 102.21 kpa

Question 13

Air says with water vapor at 80F and 740mmHg.what is the percentage of water originally in the air during processing.

Answer 13

63%

Question 14

Assume that Raoults law applies:
Hexane-20%
Benzene-50%
Toluene-30%
Dew pt.pressure at 150F
Dew pt Temp at 85 psia?
Bubble pt temp at 70 psia?
Bubble pt pressure at 150F

Answer 14

333mmHg
435 K
4399.05mmHg
425 mmHg

Question 15

A limestone analysis:
CaCO3- 92.89%
MgCO3-5.41%
Inert-1.7%

Answer 15

1041

0. 4365
1. 51

Question 16

A factory room 200 ft45ft12ft
What value of CO2 content is to be anticipated at 12 pm?
How much fresh air must be admitted per minute to ensure that the C02 shall never rise above0.1%

Answer 16

0. 1253

14216. 67

Question 17

From sugar cane, ethanol is commerce produced
Mass flowrate of ethanol soln
Mass flowrate of syrup entering the fermenter
Mass flowrate of cane juice

Answer 17

78. 58MT/day
79. 38MT/day
80. 54 MT/day

Question 18

Air is bubbled through a drum of liquid hexane…

Estimate time reqd to vaporize 10m3 of liquid

Answer 18

6880min

Question 19

One hundred grams of nitrogen is stored in a co tainer at 23°C and 300 paid
Calc container volume
Is approximation good?

Answer 19

72L

Yes

Question 20

A solution of HNO3 in water has sp gr of 1.10 at 25°C
Mole fraction ofHNO3 in the solution
Ppm of HNO3 in solution

Answer 20

3. 9*10^-5

13. 64 ppm

Question 21

A tank holds 10000 kgof satd soln of Na2CO3

To what temp must the soln be cooled?

Answer 21

26°C

Question 22

The chlorination of methane occurs by the ffg rxn.

Answer 22

ch4-13.2%
Cl2-23.2%
Ch3Cl-26.8%
HCl-26.8%
N2- 10%