Enthalpy of Combustion -- Alkanes
Write a balanced equation for the combustion of
C9H20(l) (nonane)
-- i.e. its reaction with O2(g) forming the
products CO2(g) and
H2O(l).
Given the following standard heats of formation:
What is the standard heat of reaction (ΔH°) for
the combustion reaction of
C9H20(l)?
1pts
Calculate the difference, ΔH-ΔE=Δ(PV)
for the combustion reaction of 1 mole of nonane.
(Assume standard state conditions and 298 K for all reactants and
products.
)
Enthalpy of Combustion -- Alkanes Write a balanced equation for the combustion of C9H20(l) (nonane) --...
The heat of combustion of nonane is -6124.8 KJ/mol . use this value to find the heat of formation of nonane in KJ. (You may use the data in the table below) Substance Delta H KJ/mol-1 O2 0 CO2 -393.5 H2O - 285.8 C5H12 - 173.5 C7H16 - 224.2 C9H20 -274.7 C11H24 -327.2
Use the following data to calculate the standard enthalpy of formation of heptane, C7H16 (l). C7H16 (l) + 11 O2 (g → 7 CO2 (g) + 8 H2O (l) ΔH° = -4817 kJ/mol ΔHf° of CO2 (g) = -393.5 kJ/mol ΔHf° of H2O (l) = -285.8 kJ/mol A)-218.2 kJ/mol B)-468.1 kJ/mol C)-223.9 kJ/mol D)-447.8 kJ/mol E)-111.5 kJ/mol
Write a balanced equation for the combustion of benzene, C6H6(l) . If the standard heat of combustion of benzene is –3271 kJ/mol. Calculate its standard heat of formation, H°f , given the following data: ( 4 pts) H°f [CO2(g)] = –394 kJ; H°f [H2O(l)] = –286 kJ
the enthalpy of combustion of CH4(g) to make H2O(l) and CO2(g) is -2340 kJ mol-1. The enthalpy of combustion of CH2(g) to make H2O(l) and CO2(g) is -2760 kJ mol-1. The enthalpy of formation of H2O(l) is -286 kJ mol-1. All the data are for 298 K. The heat capacities for O2(g), CHA(8), CH3(g), H2O(l) and CO2(8) are 29, 61, 71, 75 and 37 JK"mor", respectively. Deduce a) 4U298 for the combustion of C4H8(g). 5) AH for the combustion of...
The combustion of lauric acid is given by the following
thermochemcial equation: CH3(CH2)10COOH(s) + 18 O2(g) → 12 H2O(l) +
12 CO2(g) Hcomb is −7377 kJ mol−1 Using the heats of formation
for CO2(g) and H2O(l) calculate the heat of formation (△fH) of
lauric acid. △fH△ CO2(g) = −393.5 kJ mol−1 fH
H2O(l)= −285.8 kJ mol−1
19. The combustion of lauric acid is given by the following thermochemcial equation: CH3(CH2)10COOH(s) + 18 O2(g) → 12 H2O(l) + 12 CO2(g) AH...
Calculate the standard combustion enthalpy of propylene at 25 ° C using the standard formation enthalpy of liquid water (-286 kJ mol-1) and the following reactions: 1) CH2CHCH3 (g) + H2 (g) → CH3CH2CH3 (g); Δ? (1) = -125 kJ mol-1 2) CH3CH2CH3 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l); Δ? (2) = -2220 kJ mol-1 3) H 2 (g) + 0.5O2 (g) → H2O (l);Δ? ((3) = -286 kJ mol-1
The heat of combustion of decahydronaphthalene (C10H18) is −6286 kJ/mol . The heat of combustion of naphthalene (C10H8) is −5157 kJ/mol . (In both cases CO2(g) and H2O(l) are the products.) You may want to reference (Pages 1041 - 1047) Section 24.3 while completing this problem. Substance ΔH∘f (kJ/mol) CO2(g) −393.5 H2O(l) −285.83 C2H6(g) −84.68 C2H4(g) 52.30 A. Calculate the resonance energy of naphthalene. Express your answer using three significant figures.
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
1. Calculate the standard enthalpy of combustion for the following reaction: C6H12O6 (s) + 6 O2 (g) ---> 6 CO2 (g) + 6 H2O (l) To solve this problem, we must know the following ΔH°f values: C6H12O6 (s) -1275.0 O2 (g) zero CO2 (g) -393.5 H2O (l) -285.8 5. 2. Using the reaction and ΔH from #1, calculate how many liters of oxygen gas will be used to produce 11,000 kJ of energy at 745 mmHg and 90°C.
Calculate the standard enthalpy of reaction for the combustion of propane. NOTE: This equation is not balanced. Round to the nearest whole number. C3H8(g) + O2 --> CO2(g) + H2O(l) kJ/mol Compound Hf (kJ/mole) C3H8(g) -105 CO2(g) -394 H2O(l) -284