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Known reaction:
Enthalpy change for this reaction is given by:
The negative sign indicates that the energy is released.
When the formed water in liquid form is converted into gas, some amount of this released energy will be used by water for phase change.
Given that, Enthalpy of vaporization of water,
2 mol of water is formed, hence energy used by water is given by:
Therefore, standard enthalpy change for this reaction is given by:
So the correct option is (C) -1322 kJ mol-1
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2) Consider the combustion reaction of ethylene at 25 °C and 1 bar, but in the...
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Determine the change in enthalpy (kJ) for the combustion of ethylene C2H4 : C2H4 (9) + 3 O2 (g) 2 CO2(g) + 2 H20 (g) given : AHⓇCO2 (g))=-393.5 kJ/moL, AH(H20 (g) = -241.8 kJ/mol, AHⓇCO2 (g) = 0 and AH®(CH()-52.5 kJ/mol O A. +1323.1 B. +1514.7 OC. +635.3 D.-132.1 O E.-635.3 OF.-1514.7
Consider the combustion of ethylene: C2H4
(g) + 3 O2 (g)
2 CO2 (g) + 2 H2O (g)
If the concentration of C2H4 is decreasing at
the rate of 0.37 M/s what are the rates of change in the
concentrations of CO2 and H2O?
Please show formulas and work.
rrect Question 39 0/2 pts 57.) Ethylene gas (C2H4) is a ripening agent for fruit. Calculate the Delta H for the formation of ethylene gas according to the following reaction: C2H6(g) yields C2H4 (g) + H2 (8) Based on the enthalpies of the reactions: 2 C2H6(E) + 702() yields 4 CO2 (8) + 6 H20 (1) DH = -3119.4 kJ C2H4 (8) + 302(g) yields 2 CO2(g) + 2 H20 (1) DH = -1410.9 kJ 2H2(g) + O2(e) yields 2...
For the combustion of cyclopropane at 25 ºC C3H6(g) + (9/2) O2(g) → 3 CO2(g) + 3 H2O(liq) ΔHºc(C3H6,g) = -2091 kJ / mol. What is the standard molar enthalpy of formation of cyclopropane(g) at 25 ºC if the standard molar enthalpies of formation of CO2(g) and H2O(liq) at that temperature are, respectively, -393.51 kJ / mol and -285.83 kJ / mol?
Ethylene oxide is produced by the catalytic oxidation of ethylene: C2H4 (g) + 1/2 O2 (g) --> C2H4O (g) An undesired competing reaction is the combustion of ethylene to CO2. The feed to a reactor contains 2 mol C2H4/mol O2. The conversion and yield in the reactor are respectively 25% and 0.70 mol C2H4O produced/mol C2H4 consumed. A multiple-unit process separates the reactor outlet stream components: C2H4 and O2 are recycled to the reactor, C2H4O is sold, and CO2 and...
The combustion reaction of ethane is as follows. C2H6(g) + 7/2 O2(g) → 2 CO2(g) + 3 H2O(l) Using Hess's law and the reaction enthalpies given below, find the change in enthalpy for this reaction. reaction (1): C(s) + O2(g) → CO2(g) ΔH = −393.5 kJ/mol reaction (2): H2(g) + 1/2 O2(g) → H2O(l) ΔH = −285.8 kJ/mol reaction (3): 2 C(s) + 3 H2(g) → C2H6(g) ΔH = −84.0 kJ/mol
What mass of oxygen is consumed by the complete combustion of 7.0 grams of ethylene, C2H4? Molar mass of C2H4 = 28.05 g/mol C2H4(g) + 3 O2(g) → 2 CO2(g) + 2 H2O(g) Which of the following can donate a proton, H+, to water? o C2H6 Ο ΚΙ O HBr O NH3
help
pt) A sample of 1.0 mol of liquid octane C8H18(1) undergoes combustion accord 5. (10 pt) A C3H18(0) + O2(g) → 8 CO2(g) + 9 H2O(l) Using the standard enthalpies of formation given calculate the change in enthalpy in kJ/mol associated with the combustion of 1.0 mol of C8H18(1) at 1.0 bar pressure and 25 °C. Substance AH® (kJ/mol) C8H18() -249.9 CO2(g) -393.51 H2O) -285.83
[32] The enthalpy of reaction for [6] enthalpy of reaction for the combustion of C to CO, is-393.5 kJ/mol C, and the enthalpy for the combustion of CO to CO, is-283.0 kJ/mol CO: (i) C(s) + O2(g) + CO2(e) AH -393.5 kJ CO(g) + O2(g) + CO2(g) AH -283.0 kJ Using these data, calculate the enthalpy for the combustion of C to CO. (iii) C(s) + O2(g) - CO(g) AH-?
Combustion of Ethylene: C2H4 + 3 O2 -> 2 CO2 + 2H20 a) If the concentration of C2H4 is decreasing at the rate of 0.025 M/s what are the rates of change in the concentration of CO2 and H2O? Why do I have to divide 0.025 by two? B) The rate of decrease in N2H4 partial pressure in a closed reaction vessel from the reaction N2H4 + H2 -> 2NH is 63 torr. What are the rates of change of...