∆H°rxn = ∆H°f(product) - ∆H°f(reactant)
= 2∆Hf°(CO2) + 3∆Hf°(H2O) - ∆Hf°(C2H5OH) -3∆Hf°(O2)
= 2(-393.5) + 3(-285.8)-(-277.6)-3(0)
= -787 - 857.4 + 277.6
= -1366.8 KJ
For 2 moles of C2H5OH,
∆H°rxn = 2×(-1366.8) = -2734 KJ
Answer is E)
Ethanol (C2H5OH) is used as an additive in many fuels today. What is AHørxn (kJ) for...
Ethanol is used as an additive in many fuels today. What is the ΔHºrxn for the combustion of ethanol?2C2H5OH(l) + 6O2(g) → 4CO2(g) + 6H2O(l)a)401.7 kJb)-401.7 kJc)-2734 kJd)-2469 kJ
L 255-7.cozts) to 2) Ethanol, C2H5OH, is promoted as a clean fuel and is used as an additive in many gasoline mixtures. Calculate the AH rxn for the combustion of ethanol. Tail Substance Hºf(kJ/mol) og C2H5OH( -277.0 5 GHSCUli) + O2(9) -> CO2(g) +H2O() CO2(8) -393.5 737 H20(9) -241.8 A)-1235.4 kJ B-751.8 kJ C) -358.3 kJ D) 358.3 kJ E) 1235.4 Kj
Time Taken:0:33:09 Brandon Bates: Attempt 1 MULUI PUT Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. Standard enthalpy formation of [CO2(e)] = -393.5 kJ/mol and [H20(1)] = -285.8 kJ/mol, C,H,OH(1) = -277.6 kJ/mol, what is the standard enthalpy of combustion of ethanol? kJ C,H, OH(1) + 3 02(g) + 2 CO2(g) + 3 H2O(l); A Hex = AH, /mol AH° (ræn) = In A Hfº (products) - In AHF ° (reac tants) +2349 kJ/mol +1366.8...
kJ/mol kJ/mol дн, н(е -1,367.4 (ethanol) 218.2 combustion Aнр, н, е Ан дн,С (diamond) 1.90 ,На (3) 0 дн, н,о (0 Ан,С (graphie) 0 -241.8 Ан", со, (8) дн, н,о ) ΔΗ -393.5 -285.8 Ан", со, (аg) -412.9 249.4 Ан,, о, ) 0 Part 1: (a) Write the chemical equation for the formation of 1 mole of ethanol from its elements. Include the states of matter. 1 02 (g)+3 H2 (g)--c,H,OH ( 2 C (graphite) Part 2 out of 3...
Reaction Stoichiometry: Determining How Much CO2 You Produce. 1. Ethanol, C2H5OH, is a fuel additive commonly added to gasoline and when burned, produces CO2 and H20. (i) Write a balanced chemical equation that describes the combustion of ethanol. (ii) How many moles of CO2 are produced from each mole of ethanol completely burned? (ii) How many moles of O2 are required to produce 10.0 moles of CO2? (iii) What mass of CO2 is produced from the combustion of the 4.3...
termine AHo for the combustion of ethanol. Given: AHof (in kJ mol-1): C2H5OH(): -277.69 CO2(g): -393.51 H2O(l): -285.83 • 13. Calculate AHO, 298K for the following reaction: CO(g) + 1/2 02(g) 2 CO2(g) Given: A Hof,298K (in kJ mol-1): CO(g): -110.53 CO2(g): -393.51
5. The standard molar entropy of liquid ethanol (C2H5OH) is 160.7 J K mol and the standard enthalpy of combustion is - 1368 kJ mol at 298 K, how much is the standard Gibbs energy (A,Gº) of formation of liquid ethanol at 298 K? (20 pts) The formation reaction of ethanol is 2C (graphite) + O2(g) + 3H2 (g) → C2H5OH() The combustion reaction of ethanol is CH5OH (1) + 302 (9) ► 200, (g) + 3H20 (1) CO; (g)...
PLS HELP NOW 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
What is the DeltaG of the following reaction in kJ/mol of ethanol? C2H5OH(g) + 3 O2(g) ? 2 CO2(g) + 3 H2O(g) E°cell = 1.13 V The answer is -1310 kj/mol. Please explain how you got the answer.
Measuring Heat of Reaction Problems 5. A sample of ethanol (C2H5OH), weighing 6.83 g underwent combustion in a bomb calorimeter by the following reaction: 02 (g) 2 CO2 (g)3 H2O () C2H5OH ()3 If the heat capacity of the calorimeter and contents was 18.1 kJ/°C and the temperature of the calorimeter rose from 25.50 to 36.73, (1) what is the AH of the reaction? Using the definitions at the beginning of the module describe (2) the calorimeter + contents, (3)...