25 + Mcqs in Modeling Predicting Vapor Pressure in Chemical Engineering Page 1 McqOptions

1.	For CaOCl2, the rate of evaporation is given by W = 325p0.5M/T1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 – 2700/T, what is the evaporation rate at T = 150 K?
A.	256 g/liter
B.	499 g/liter
C.	571 g/liter
D.	744 g/literView answer
Answer» E.

Discussion

2.	The vapor pressure of a compound in a liquid phase is given by ln p* = 21 – 2800/T, and in solid phase it is given by ln p* = 28 – 3500/T, what is the sublimation temperature of the compound?
A.	100 K
B.	120 K
C.	150 K
D.	200 KView answer
Answer» B. 120 K

Discussion

3.	The vapor pressure of liquid benzene is given by ln p* = 15 – 1280/T, and that of vapor benzene is given by ln p* = 23 – 2560/T, what is the boiling point of benzene?
A.	160 K
B.	200 K
C.	240 K
D.	300 KView answer
Answer» B. 200 K

Discussion

4.	At triple point, vapor pressure of ice is given by ln p* = 18 – 2560/T, and vapor pressure of water is given by ln p* = 28 – 5120/T, what is the temperature at triple point?
A.	225 K
B.	256 K
C.	320 K
D.	400 KView answer
Answer» C. 320 K

Discussion

5.	Temperature of SO2 at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?
A.	400 K
B.	405 K
C.	410 K
D.	415 KView answer
Answer» B. 405 K

Discussion

6.	What is the pressure of CO2 at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?
A.	4.5 Pa
B.	5 Pa
C.	5.5 Pa
D.	6 PaView answer
Answer» C. 5.5 Pa

Discussion

7.	Pressure of a gas at 127oC is 10 mm Hg and the pressure at 527oC is 20 Pa, what is the value of B?
A.	225.1
B.	365.5
C.	499.2
D.	554.5View answer
Answer» E.

Discussion

8.	If the pressure of a gas at 27oC is 15 mm Hg, what will be its pressure at 127oC, use B = 5 X 103, C = 0, T is in kelvin and P is in mm Hg?
A.	579 mm Hg
B.	775 mm Hg
C.	961 mm Hg
D.	999 mm HgView answer
Answer» D. 999 mm HgView answer

Discussion

9.	A material’s mass is given by the equation, m = 32P0.02/T0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127oC, use A = 10, B = 6 X 103 and C = 0?
A.	1.44 Kg
B.	1.69 Kg
C.	1.96 Kg
D.	2.25 KgView answer
Answer» B. 1.69 Kg

Discussion

10.	What is the pressure of a gas at T = 227oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg?
A.	0.024 mm Hg
B.	0.049 mm Hg
C.	0.075 mm Hg
D.	0.096 mm HgView answer
Answer» C. 0.075 mm Hg

Discussion

11.	AT_TRIPLE_POINT,_VAPOR_PRESSURE_OF_ICE_IS_GIVEN_BY_LN_P_=_18_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_2560/T,_AND_VAPOR_PRESSURE_OF_WATER_IS_GIVEN_BY_LN_P_=_28_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_5120/T,_WHAT_IS_THE_TEMPERATURE_AT_TRIPLE_POINT??$#
A.	225 K
B.	256 K
C.	320 K
D.	400 K
Answer» C. 320 K

Discussion

12.	The vapor pressure of a compound in a liquid phase is given by ln p* = 21 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2800/T, and in solid phase it is given by ln p* = 28 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 3500/T, what is the sublimation temperature of the compound?$#
A.	100 K
B.	120 K
C.	150 K
D.	200 K
Answer» B. 120 K

Discussion

13.	The vapor pressure of liquid benzene is given by ln p* = 15 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1280/T, and that of vapor benzene is given by ln p* = 23 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2560/T, what is the boiling point of benzene?$#
A.	160 K
B.	200 K
C.	240 K
D.	300 K
Answer» B. 200 K

Discussion

14.	The pressure of a compound at 200 K is 10 mm Hg and at 400 K it is 50 mm Hg, what is the pressure at T = 250 K?
A.	18.1 mm Hg
B.	24.2 mm Hg
C.	36.3 mm Hg
D.	48.4 mm Hg
Answer» B. 24.2 mm Hg

Discussion

15.	What is the vapor pressure of ammonia at 305 K, if it is given that the vapor pressure of ammonia at 315 K is 5 mm Hg and at 325 K it is 6 mm Hg?
A.	1 mm Hg
B.	2 mm Hg
C.	3 mm Hg
D.	4 mm Hg
Answer» E.

Discussion

16.	For CaOCl₂, the rate of evaporation is given by W = 325p^0.5M/T^1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2700/T, what is the evaporation rate at T = 150 K?$
A.	256 g/liter
B.	499 g/liter
C.	571 g/liter
D.	744 g/liter
Answer» E.

Discussion

17.	A liquid evaporates first at which of the following conditions?
A.	High attraction forces
B.	Low attraction forces
C.	Low vapor pressure
D.	High boiling point
Answer» C. Low vapor pressure

Discussion

18.	At which of the following values of pressure a solid melts first?
A.	5 atm
B.	720 mm Hg
C.	500 KPa
D.	40 Torr
Answer» B. 720 mm Hg

Discussion

19.	Temperature of SO₂ at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?
A.	400 K
B.	405 K
C.	410 K
D.	415 K
Answer» B. 405 K

Discussion

20.	What is the pressure of CO₂ at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?
A.	4.5 Pa
B.	5 Pa
C.	5.5 Pa
D.	6 Pa
Answer» C. 5.5 Pa

Discussion

21.	Pressure of a gas at temperature T is P, What is the pressure of the gas at 2T, use B = 1?
A.	Pe<sup>1/T</sup>
B.	Pe<sup>1/2T</sup>
C.	Pe<sup>1/3T</sup>
D.	Pe<sup>1/4T</sup>
Answer» C. Pe<sup>1/3T</sup>

Discussion

22.	Pressure of a gas at 127^oC is 10 mm Hg and the pressure at 527^oC is 20 Pa, what is the value of B?
A.	225.1
B.	365.5
C.	499.2
D.	554.5
Answer» E.

Discussion

23.	If the pressure of a gas at 27^oC is 15 mm Hg, what will be its pressure at 127^oC, use B = 5 X 10³, C = 0, T is in kelvin and P is in mm Hg?
A.	579 mm Hg
B.	775 mm Hg
C.	961 mm Hg
D.	999 mm Hg
Answer» D. 999 mm Hg

Discussion

24.	A material‚Äö√Ñ√∂‚àö√ë‚àö¬•s mass is given by the equation, m = 32P^0.02/T^0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127^oC, use A = 10, B = 6 X 10³ and C = 0?$
A.	1.44 Kg
B.	1.69 Kg
C.	1.96 Kg
D.	2.25 Kg
Answer» B. 1.69 Kg

Discussion

25.	What is the pressure of a gas at T = 227^oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg?
A.	0.024 mm Hg
B.	0.049 mm Hg
C.	0.075 mm Hg
D.	0.096 mm Hg
Answer» C. 0.075 mm Hg

Discussion

Explore topic-wise MCQs in Chemical Engineering.

For CaOCl2, the rate of evaporation is given by W = 325p0.5M/T1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 – 2700/T, what is the evaporation rate at T = 150 K?

The vapor pressure of a compound in a liquid phase is given by ln p* = 21 – 2800/T, and in solid phase it is given by ln p* = 28 – 3500/T, what is the sublimation temperature of the compound?

The vapor pressure of liquid benzene is given by ln p* = 15 – 1280/T, and that of vapor benzene is given by ln p* = 23 – 2560/T, what is the boiling point of benzene?

At triple point, vapor pressure of ice is given by ln p* = 18 – 2560/T, and vapor pressure of water is given by ln p* = 28 – 5120/T, what is the temperature at triple point?

Temperature of SO2 at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?

What is the pressure of CO2 at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?

Pressure of a gas at 127oC is 10 mm Hg and the pressure at 527oC is 20 Pa, what is the value of B?

If the pressure of a gas at 27oC is 15 mm Hg, what will be its pressure at 127oC, use B = 5 X 103, C = 0, T is in kelvin and P is in mm Hg?

A material’s mass is given by the equation, m = 32P0.02/T0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127oC, use A = 10, B = 6 X 103 and C = 0?

What is the pressure of a gas at T = 227oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg?

AT_TRIPLE_POINT,_VAPOR_PRESSURE_OF_ICE_IS_GIVEN_BY_LN_P*_=_18_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_2560/T,_AND_VAPOR_PRESSURE_OF_WATER_IS_GIVEN_BY_LN_P*_=_28_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_5120/T,_WHAT_IS_THE_TEMPERATURE_AT_TRIPLE_POINT??$#

The vapor pressure of a compound in a liquid phase is given by ln p* = 21 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2800/T, and in solid phase it is given by ln p* = 28 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 3500/T, what is the sublimation temperature of the compound?$#

The vapor pressure of liquid benzene is given by ln p* = 15 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1280/T, and that of vapor benzene is given by ln p* = 23 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2560/T, what is the boiling point of benzene?$#

The pressure of a compound at 200 K is 10 mm Hg and at 400 K it is 50 mm Hg, what is the pressure at T = 250 K?

What is the vapor pressure of ammonia at 305 K, if it is given that the vapor pressure of ammonia at 315 K is 5 mm Hg and at 325 K it is 6 mm Hg?

For CaOCl2, the rate of evaporation is given by W = 325p0.5M/T1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2700/T, what is the evaporation rate at T = 150 K?$

A liquid evaporates first at which of the following conditions?

At which of the following values of pressure a solid melts first?

Temperature of SO2 at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?

What is the pressure of CO2 at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?

Pressure of a gas at temperature T is P, What is the pressure of the gas at 2T, use B = 1?

Pressure of a gas at 127oC is 10 mm Hg and the pressure at 527oC is 20 Pa, what is the value of B?

If the pressure of a gas at 27oC is 15 mm Hg, what will be its pressure at 127oC, use B = 5 X 103, C = 0, T is in kelvin and P is in mm Hg?

A material‚Äö√Ñ√∂‚àö√ë‚àö¬•s mass is given by the equation, m = 32P0.02/T0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127oC, use A = 10, B = 6 X 103 and C = 0?$

What is the pressure of a gas at T = 227oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg?

AT_TRIPLE_POINT,_VAPOR_PRESSURE_OF_ICE_IS_GIVEN_BY_LN_P_=_18_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_2560/T,_AND_VAPOR_PRESSURE_OF_WATER_IS_GIVEN_BY_LN_P_=_28_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_5120/T,_WHAT_IS_THE_TEMPERATURE_AT_TRIPLE_POINT??$#

For CaOCl₂, the rate of evaporation is given by W = 325p^0.5M/T^1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 2700/T, what is the evaporation rate at T = 150 K?$

Temperature of SO₂ at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa?

What is the pressure of CO₂ at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa?

Pressure of a gas at 127^oC is 10 mm Hg and the pressure at 527^oC is 20 Pa, what is the value of B?

If the pressure of a gas at 27^oC is 15 mm Hg, what will be its pressure at 127^oC, use B = 5 X 10³, C = 0, T is in kelvin and P is in mm Hg?

A material‚Äö√Ñ√∂‚àö√ë‚àö¬•s mass is given by the equation, m = 32P^0.02/T^0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127^oC, use A = 10, B = 6 X 10³ and C = 0?$

What is the pressure of a gas at T = 227^oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg?