How are enthalpies of streams calculated?
1. Relative to the reference state
2.Absolutely
3.Depends on the reaction
4.None of the mentioned
Posted Date:-2022-03-16 02:02:00
In a reaction the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.4 glucose and 0.6 water, what is the fraction of glucose in the products?
1. 0.2
2.0.4
3. 0.6
4.0.8
Posted Date:-2022-03-15 18:58:42
In the reaction C + 2H2 -> CH4, if the heat liberated is -5 J, what is the heat of formation of CH4?
1.-5J
2.5 J
3.0 J
4.Cannot be determined
Posted Date:-2022-03-15 18:54:57
In the reaction C + O2 -> CO2, if the heat liberated is 10 J, what is the heat of formation of CO2?
1.-10 J
2.10 J
3.0
4.Cannot be determined
Posted Date:-2022-03-15 18:53:13
Three feeds, 10 mole with H = 25 J/mole, 5 mole with H = 10 J/mole and 15 mole with 20 J/mole, what is the enthalpy of the products?
1.10 J/mole
2.12 J/mole
3. 20 J/mole
4.28 J/mole
Posted Date:-2022-03-15 19:04:12
Two feeds, 5 mole with 25 J/mole and F with 5 J/mole, product contains two streams, 5 mole with 10 J/mole and 10 mole with 15 J/mole, what is the value of F?
1.10 mole
2.15 mole
3. 20 mole
4.25 mole
Posted Date:-2022-03-15 19:05:23
What is the enthalpy of reaction forC6H6 -> 3C2H2, if the conversion of C6H6 is 80%, and heat of formation of C6H6, and C2H2 are 24 J, and 8 J?
1. 0
2.2.4 J
3.4.8 J
4.5.6 J
Posted Date:-2022-03-16 01:53:24
What is the heat transferred to the system, if change in enthalpy is 15 J and change in volume is 2 m3 at 5 Pa?
1. 5 J
2.8 J
3.10 J
4.12 J
Posted Date:-2022-03-16 01:57:12
Enthalpy of a stream is which function of temperature and pressure?
1.Explicit
2.Implicit
3.Cannot say
4.None of the mentioned
Posted Date:-2022-03-15 18:55:36
Heat of formations of A, B, C, and D, are 1 J, 2 J, 3 J, and 4 J respectively, what is the heat of reaction 3A + 4B -> 2C + D?
1.-1 J
2.1 J
3.3 J
4.6 J
Posted Date:-2022-03-15 18:52:03
Heat of formations of A, B, C, and D, are 2 J, 5 J, 3 J, and 10 J respectively, what is the heat of reaction 4A + 5B -> 2C + 2D?
1. -10 J
2.-7 J
3. -5 J
4. 0.4
Posted Date:-2022-03-15 18:52:25
Heat of formations of A, B, C, and D, are 3 J, 5 J, 4 J, and 8 J respectively, what is the heat of reaction 2A + 2B -> 2C + D?
1.-5 J
2.0
3.5 J
4.8 J
Posted Date:-2022-03-15 18:52:53
Heat of formations of A, B, C, and D, are 5 J, 10 J, 15 J, and 20 J respectively, what is the heat of reaction A + 4B -> 3C + D?
1.10 J
2.20 J
3.35 J
4.45 J
Posted Date:-2022-03-15 18:51:01
Heat of formations of A, B, C, and D, are 5 J, 8 J, 2 J, and 15 J respectively, what is the heat of reaction 3A + B -> 3C + 2D?
1. 9 J
2. 10 J
3.13 J
4.15 J
Posted Date:-2022-03-15 18:51:43
In a reaction the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.4 glucose and 0.6 water, what is the fraction of water in the products?
1. 0.2
2.0.4
3.0.6
4.0.8
Posted Date:-2022-03-15 18:59:56
In a reaction the feed is 5 moles of 0.5 glucose and 0.5 sucrose, and another feed of 15 moles of 0.3 glucose and 0.7 sucrose, what is the fraction of glucose in the products?
1.0.35
2. 0.45
3.0.75
4.0.95
Posted Date:-2022-03-15 19:00:59
In a reaction, the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.2 glucose and 0.8 water, what is the total moles of product?
1.5
2.10
3.15
4. 20
Posted Date:-2022-03-15 18:56:01
In the reaction 2C + O2-> 2CO, if the heat liberated is 10 J, what is the heat of formation of CO?
1.-5 J
2. 5 J
3.-10 J
4.10 J
Posted Date:-2022-03-15 18:54:30
In the reaction 2H2 + O2 -> 2H2O, if the heat liberated is 50 J, what is the heat of formation of H2O?
1.-25 J
2.25 J
3.-50 J
4.50 J
Posted Date:-2022-03-15 18:53:41
In the reaction 2N -> N2, if the heat liberated is 6 J, what is the heat of formation of N2?
1. – 6 J
2.6 J
3.0
4.Cannot be determined
Posted Date:-2022-03-15 18:54:05
The specific volume of a gas is 2 m3/Kg, at 12 Pa, H = 30 J/Kg and at 15 Pa, H = 45 J/Kg, what is the heat transferred to the system?
1. 6 J/Kg
2.9 J/Kg
3.12 J/Kg
4.15 J/Kg
Posted Date:-2022-03-16 01:59:58
The specific volume of a gas is 3 m3/Kg, at 6 Pa, H = 4 J/Kg and at 9 Pa, H = 14 J/Kg, what is the heat transferred to the system?
1. 0
2.1 J/Kg
3.5 J/Kg
4.25 J/Kg
Posted Date:-2022-03-16 02:00:23
The specific volume of a gas is 5 m3/Kg, at 10 Pa, H = 50 J/Kg and at 20 Pa, H = 100 J/Kg, what is the heat transferred to the system?
1. 0
2.50 J/Kg
3.100 J/Kg
4.150 J/Kg
Posted Date:-2022-03-16 01:59:16
The specific volume of a gas is 5 m3/Kg, at 25 Pa, H = 40 J/Kg and at 40 Pa, H = 90 J/Kg, what is the heat transferred to the system?
1.-5 J/Kg
2.5 J/Kg
3.-25 J/Kg
4.25 J/Kg
Posted Date:-2022-03-16 01:59:40
The specific volume of SO2 is 10 m3/Kg, at 5 Pa, H = 100 J/Kg and at 10 Pa, H = 250 J/Kg, what is the heat transferred to the system?
1.100 J/Kg
2.150 J/Kg
3.250 J/Kg
4.350 J/Kg
Posted Date:-2022-03-16 01:58:54
Three feeds, 10 mole with H = 15 J/mole, 20 mole with H = 5 J/mole and F1 with 20 J/mole, if enthalpy of the products is H = 15 J/mole, what is the value of F1?
1.10 mole
2.20 mole
3.30 mole
4. 40 mole
Posted Date:-2022-03-15 19:04:39
Three feeds, 10 mole with H = 5 J/mole, 10 mole with H = 15 J/mole and 5 mole with 20 J/mole, what is the enthalpy of the products?
1.10 J/mole
2. 12 J/mole
3.15 J/mole
4. 24 J/mole
Posted Date:-2022-03-15 19:03:14
Two feeds, 10 mole with 5 J/mole and 20 mole with 15 J/mole, product contains two streams, 5 mole with 10 J/mole and P with 25 J/mole, what is the value of P?
1.10 mole
2.12 mole
3.15 mole
4. 18 mole
Posted Date:-2022-03-15 19:05:01
Two feeds, 10 moles with H = 10 J/mole and 5 with H = 25 J/mole, what is the enthalpy of products?
1.5 J/mole
2.10 J/mole
3.15 J/mole
4. 20 J/mole
Posted Date:-2022-03-15 19:02:09
Two feeds, 15 moles with H = 10 J/mole and 10 with H = 20 J/mole, what is the enthalpy of products?
1. 8 J/mole
2.12 J/mole
3.18 J/mole
4.25 J/mole
Posted Date:-2022-03-15 19:02:31
Two feeds, F1 with H = 10 J/mole and 5 moles with H = 20 J/mole, if the mole of products is 10 what is the enthalpy of products?
1.10 J/mole
2.15 J/mole
3.20 J/mole
4.25 J/mole
Posted Date:-2022-03-15 19:02:53
Two feeds, F1 with H = 10 J/mole and F2 with H = 20 J/mole, and product 10 moles with H = 15 J/mole, what is the F1?
1.5 mole
2.10 mole
3.15 mole
4.20 mole
Posted Date:-2022-03-15 19:01:42
What is the energy balance of a closed system?
1.Matter in the system is constant
2.Matter in the system is constant
3.Neither energy nor matter is constant
4.Both of energy and matter are constant
Posted Date:-2022-03-16 01:56:27
What is the enthalpy change of a reaction at 30oC, if the enthalpy of reactant at 30oC and 25oC are 18 J and 15 J, and enthalpy of product at 30oC and 25oC are 10 J and 8 J, and the enthalpy change of reaction at 25oC is 45 J?
1.10 J
2.25 J
3.50 J
4.100 J
Posted Date:-2022-03-16 01:55:02
What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 18 J and 10 J, and enthalpy of product at 35oC and 25oC are 12 J and 8 J, and the enthalpy change of reaction at 25oC is 15 J?
1.9 J
2.14 J
3.22 J
4.27 J
Posted Date:-2022-03-16 01:54:12
What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 22 J and 15 J, and enthalpy of product at 35oC and 25oC are 10 J and 5 J, and the enthalpy change of reaction at 25oC is 36 J?
1.12 J
2.24 J
3.36 J
4. 48 J
Posted Date:-2022-03-16 01:54:36
What is the enthalpy change of a reaction at 45oC, if the enthalpy of reactant at 45oC and 25oC are 10 J and 6 J, and enthalpy of product at 45oC and 25oC are 15 J and 8 J, and the enthalpy change of reaction at 25oC is 10 J?
1.14 J
2.21 J
3.27 J
4.34 J
Posted Date:-2022-03-16 01:53:49
What is the enthalpy change of a reaction at 90oC, if the enthalpy of reactant at 90oC and 25oC are 60 J and 25 J, and enthalpy of product at 90oC and 25oC are 80 J and 10 J, and the enthalpy change of reaction at 25oC is 5 J?
1.10 J
2.50 J
3. 110 J
4.150 J
Posted Date:-2022-03-16 01:55:30
What is the enthalpy of a reaction, if the standard heat of formation of a compound is 10 J and sensible heat of the compound is 5 J?
1.0
2.5 J
3.10 J
4.15 J
Posted Date:-2022-03-16 02:02:33
What is the enthalpy of a reaction, if the standard heat of formation of a compound is 10 J, sensible heat of the compound is 30 J, and latent heat of the compound is 20 J?
1. 10 J
2.30 J
3.40 J
4.60 J
Posted Date:-2022-03-16 02:03:40
What is the enthalpy of a reaction, if the standard heat of formation of a compound is 15 J and sensible heat of the compound is 25 J?
1.15 J
2.25 J
3.40 J
4. 50 J
Posted Date:-2022-03-16 02:02:53
What is the enthalpy of a reaction, if the standard heat of formation of a compound is 15 J, sensible heat of the compound is 25 J, and latent heat of the compound is 10 J?
1.25 J
2. 40 J
3. 50 J
4.65 J
Posted Date:-2022-03-16 02:03:17
What is the enthalpy of reaction for C + O2 -> CO2, if the conversion of C is 50%, and heat of formation of C, O2, and CO2 are 0, 0 and 10 J.
1. 5 J
2.10 J
3.15 J
4. 20 J
Posted Date:-2022-03-16 01:51:38
What is the enthalpy of reaction for C2H4 + 3O2 -> 2CO2+ 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?
1. 0
2.2 J
3.5 J
4.10 J
Posted Date:-2022-03-16 01:52:23
What is the enthalpy of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?
1.0
2. 2 J
3. 4 J
4. 6 J
Posted Date:-2022-03-16 01:52:02
What is the enthalpy of reaction for CO2 + 4H2 -> 2H2O + CH4, if the conversion of CO2 is 50%, and heat of formation of CO2, H2, H2O, and CH4 are 6 J, 0, 4 J and 10 J?
1. 2 J
2.5 J
3.6 J
4.9 J
Posted Date:-2022-03-16 01:52:58
What is the enthalpy of the reaction from 25oC to 40oC if CP = 10 J/oC, and the reference enthalpy is 10 J?
1.80 J
2.120 J
3. 160 J
4.200 J
Posted Date:-2022-03-16 02:03:59
What is the heat of reaction for 2H2 + O2 -> 2H2O, if heat of formation of H2, O2, and H2O are 2 J, 5 J, and 10 J respectively?
1. 2 J
2.5 J
3.8 J
4.11 J
Posted Date:-2022-03-16 01:50:09
What is the heat of reaction for C2H4 + 3O2 -> 2CO2 + 2H2O, if heat of formation of C2H4, O2, CO2, and H2O are 10 J, 5 J, 6 J and 2 J respectively?
1.-4 J
2.-2 J
3.0
4. 4 J
Posted Date:-2022-03-16 01:50:52
What is the heat of reaction for C6H6 + 3H2 -> C6H12, if heat of formation of C6H6, H2, and C6H12 are 25 J, 5 J and 50 J respectively?
1.10 J
2.20 J
3.30 J
4.35 J
Posted Date:-2022-03-16 01:51:16
What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if heat of formation of CH4, O2, CO2 and H2O are 10 J, 5 J, 6 J, and 12 J respectively?
1. -10 J
2. 10 J
3.-20 J
4.20 J
Posted Date:-2022-03-16 01:49:45
What is the heat transferred to the system, if a change in enthalpy is 25 J and change in pressure is 5 Pa at volume 3 m3?
1. 5 J
2.10 J
3. 15 J
4. 20 J
Posted Date:-2022-03-16 01:57:41
What is the heat transferred to the system, if a change in internal energy is 10 J?
1. 0
2.-10 J
3.10 J
4.Cannot be determined
Posted Date:-2022-03-16 01:56:49
What is the heat transferred to the system, if change in enthalpy is 30 J and pressure, volume changed from 8 Pa, 5 m3 to 4 Pa, 12 m3?
1.12 J
2.15 J
3.18 J
4.22 J
Posted Date:-2022-03-16 01:58:18