5.5.1 Given the following information:AH = -483.6 kJ/molAH = +284.6 kJ/mol2H2(g) + O2(g)2H,O(g)30:(g)20;(g)%3!what is AH for 3H2(g) + O3(g)3H;0(g)?a) -199 kJ/mold) +768.2 kJ/molb) -1010 kJ/mole) -440.8 kJ/molc) -867.7 kJ/mol

The expression that will be used in the determination of the change in enthalpy for the net reaction…

Answered: 5.5.1 Given the following information:…

Chemistry

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

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Chapter1: Chemical Foundations

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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(Q9) If 1.55 grams of propane (C3H8) undergo combustion in an excess of oxygen and -71.9 kJ of heat are released, what is the enthalpy of reaction (AHrxn) per mole of propane that undergoes combustion? (4 sf)
6.63 From the following heats of combustion, CH₂OH() + O₂(g) CO₂(g) + 2H₂O(1) AH-726.4 kJ/mol C(graphite) + O₂(g) → CO₂(g) AH-393.5 kJ/mol H₂(g) + O₂(g) → H₂O(1) AH-285.8 kJ/mol calculate the enthalpy of formation of methanol (CH3OH) from its elements: C(graphite) + 2H₂(g) + O₂(g) → CH₂OH(1)
7.72 Classify each of the following as exothermic or endothermic: a. C3Hg(g) + 502(g) b. 2Na(s) + Cl,(g) c. PCI5(g) + 67 kJ → 3CO2(g) + 4H,O(g) + 2220 kJ 2NACI(s) + 819 kJ > PCI,(g) + Cl2(g)
5.62
90.0g of Ethyl Alcohol is mixed with 200g of water. If the mixture is heated from 20°C to 78°C, what is the energy required to heat the mixture? (???ℎ???? = 2.3 ?? ??°? and ??2? = 4.18 ?? ??°?) (ans: 60.5 kJ)
7.6 Given the thermochemical equation 2SO2 + O2 →2SO3, ΔH = -198kJ/mol, what is the standard enthalpy change for the decomposition of one mole of SO3?
7.10 Determine the heat of reaction for the following chemical reaction: CaO(s) + CO2(g) → CaCO3(s) Given the following equations Ca(OH)2(s) → CaO(s) + H2O(l) ΔH = 65.2 kJCa(OH)2(s) + CO2(g) → CaCO3(s) + H2O(l) ΔH = -113.2 kJC(s) + O2(g) → CO2(g) ΔH = -393.5 kJ2 Ca(s) + O2(g) → 2 CaO(s) ΔH = -1270.2 kJ
3. Using the data given in the table below, calculate the AHxn (in kJ/mol) of the following: 2N₂H4(g) + N2O4(g) → 3N2(g) + 4H₂O(g) Species N₂H4(g) N₂O4(g) N2(g) H₂O(g) AHºf (kJ/mol) 95.4 11.1 0 -241.8
9.38 The energy densities of various types of coal are listed below. Anthracite 35 kJ/g Bituminous 28 kJ/g Subbituminous 31 kJ/g Lignite 26 kJ/g Energy anUChe An unknown sample of one of these coals is burned in an apparatus with a calorimeter constant the kJ/C. When a 0.367-g sample is used, the temperature change is 8.75°C. Which type of coar s ae sample? dimen-
5.64) How do I calculate delta H?
1.3 Using the table of average bond Enthalpies below, calculate the AH for the following gas-phase reaction. C=O(g)+2H2(g) →H,C-O-H (g)
2. Solving an enthalpy of neutralization problem. (see Chemistry 2e, Example 5.5): a. Calculate q when 47.35 g of water is heated from 22.6 C to 31.1 C. cal 9 = m CAT q= (47.35) (8.5) (4.186)

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5.5.1 Given the following information: AH = -483.6 kJ/mol AH = +284.6 kJ/mol 2H2(g) + O2(g) 2H,O(g) 30:(g) 20;(g) %3! what is AH for 3H2(g) + O3(g) 3H;0(g)? a) -199 kJ/mol d) +768.2 kJ/mol b) -1010 kJ/mol e) -440.8 kJ/mol c) -867.7 kJ/mol