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15) The condition for standard enthalpy change is a) 1 atm & 30 °C b) 1 atm & 0 °C c) 1 atm & 25 °C d) 760 atm & 25 °C

15) The condition for standard enthalpy change is a) 1 atm & 30 °C b) 1 atm & 0 °C c) 1 atm & 25 °C d) 760 atm & 25 °C

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.101PAE
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Q 15 please
) Of the following, which one is a path function? a) H b) q 2) A 15) 3) Of the following, AH, #0 is not zero for a) O₂(g) Consider the following two reactions: 16) AH corresponds to an a) negative, endothermic c) positive, exothermic 17) 19) b) C (graphite) First law of thermodynamics is represented as a) AE-q+RT c) AE-q,-RT c) S process. A-2B A C Determine the enthalpy change for the process: 24+2C →8B a) 1871 kJ b)-1871 kJ The condition for standard enthalpy change is a) 1 atm & 30 °C b) 1 atm & 0 °C 8 b) negative, exothermic d) zero, exothermic c) N₂ (g) AH=456.7 kJ/mol All=-22.1 kJ/mol AH =? Calculate AH" for the reaction: 4CO(g) + 2H₂O(g) → 2CH(g) + 50:(g) By using the following reactions and Hess's law: (1) H:(g) + 1/202(g) → H₂O(g) (2) C₂H(g) + 2H2(g) → C₂(g) (3) C₂He(g) +7/20:2(g) → 2CO:(g) + 3H₂O(g) b) -818.7 kJ a) +255 kJ c) 470.2 kJ 18) Which one of the following is the unit of the specific heat capacity? 20) For the following reaction: 2NH(g) →N2(g) + 3H2(g). c) 1782.6 kJ c) 1 atm & 25 °C b) AE = q + AP d) AE =q+w R.C AH-71.2 kJ AH-94.5 kJ AH--283 kl calculate the work against a constant external pressure of 1 atm at 25 °C? b) w=-4955.15 J a) w = 4955.15 J c) w=5406.61 d) F₂ (8) d)-1782.6 kJ d) G d) 760 atm & 25 °C d) 531 kJ d) & C J Calculate the work done by 1.00 mole of an ideal gas expanding from a volume of 3 L to a volume of 8 L at a constant external pressure of 2 atm? c) w-1012.7J a) w=1012.7 J b) w -10.0 J d) w-10.01 d) w--5406.6
Transcribed Image Text:) Of the following, which one is a path function? a) H b) q 2) A 15) 3) Of the following, AH, #0 is not zero for a) O₂(g) Consider the following two reactions: 16) AH corresponds to an a) negative, endothermic c) positive, exothermic 17) 19) b) C (graphite) First law of thermodynamics is represented as a) AE-q+RT c) AE-q,-RT c) S process. A-2B A C Determine the enthalpy change for the process: 24+2C →8B a) 1871 kJ b)-1871 kJ The condition for standard enthalpy change is a) 1 atm & 30 °C b) 1 atm & 0 °C 8 b) negative, exothermic d) zero, exothermic c) N₂ (g) AH=456.7 kJ/mol All=-22.1 kJ/mol AH =? Calculate AH" for the reaction: 4CO(g) + 2H₂O(g) → 2CH(g) + 50:(g) By using the following reactions and Hess's law: (1) H:(g) + 1/202(g) → H₂O(g) (2) C₂H(g) + 2H2(g) → C₂(g) (3) C₂He(g) +7/20:2(g) → 2CO:(g) + 3H₂O(g) b) -818.7 kJ a) +255 kJ c) 470.2 kJ 18) Which one of the following is the unit of the specific heat capacity? 20) For the following reaction: 2NH(g) →N2(g) + 3H2(g). c) 1782.6 kJ c) 1 atm & 25 °C b) AE = q + AP d) AE =q+w R.C AH-71.2 kJ AH-94.5 kJ AH--283 kl calculate the work against a constant external pressure of 1 atm at 25 °C? b) w=-4955.15 J a) w = 4955.15 J c) w=5406.61 d) F₂ (8) d)-1782.6 kJ d) G d) 760 atm & 25 °C d) 531 kJ d) & C J Calculate the work done by 1.00 mole of an ideal gas expanding from a volume of 3 L to a volume of 8 L at a constant external pressure of 2 atm? c) w-1012.7J a) w=1012.7 J b) w -10.0 J d) w-10.01 d) w--5406.6
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