From the following data, C (graphite) + 0₂(g) H₂(g) + O₂(g) → H₂0 (1) 2C₂H6(g) + 70₂(g) → 4CO₂(g) + 6H₂0 (1) Calculate the enthalpy change for the reaction below: 2C (graphite) + 3H₂(g) C₂H6 (g) Be sure your answer has the correct number of significant digits. kJ CO₂ (g) 0 X S ΔΗ° =-393.5 rxn AH° mol -285.8 rxn AH° = -3120.8 rxn mol kl mol

From the following data, C (graphite) + 0₂(g) H₂(g) + O₂(g) → H₂0 (1) 2C₂H6(g) + 70₂(g) → 4CO₂(g) + 6H₂0 (1) Calculate the enthalpy change for the reaction below: 2C (graphite) + 3H₂(g) C₂H6 (g) Be sure your answer has the correct number of significant digits. kJ CO₂ (g) 0 X S ΔΗ° =-393.5 rxn AH° mol -285.8 rxn AH° = -3120.8 rxn mol kl mol

Chemistry

10th Edition

ISBN:9781305957404

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

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

Chapter1: Chemical Foundations

Section: Chapter Questions

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

See similar textbooks

Similar questions

Methane combustion provides a significant fraction of the world's primary energy, and is used for home heating, cooking food, heating water, and electrical generation. The methane combustion is represented by the following chemical equation: CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g) Find the Enthalpy of the above reaction ΔHreaction using the enthalpies of formation in the image.
Enter your answer in the provided box. Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Determine A Hrxn for C(diamond) C(graphite) with equations from the following list: (1) C(diamond) + O₂(g) → CO₂(g) (2) 2 CO₂(g) → 2 CO(g) + O₂(g) (3) C(graphite) + O₂(g) - CO₂(g) (4) 2 CO(g) → › C(graphite) + CO₂(g) Hoverall kJ AH = -395.4 kJ AH = 566.0 kJ AH = -393.5 kJ AH = -172.5 kJ
Use the following information to answer the next question. Given the following data: P4(S) + 6Cl₂(g) - 4PC|3(g) A,H-2439 kJ 4PC15(g) → P4(s) + 10Cl₂(g) AH +3438 kJ Using Hess's Law, the enthalpy of reaction for the following equation: PCIs(g) PC13(g) + Cl2(g) is calculated to be Record your answer to two decimal places. Include sign; do not include units. Use the following information to answer the next question. Given the following data: N₂H4(1) + CH4O(1) - CH₂O(g) + N₂(g) + 3H₂(g) N₂(g) + 3H₂(g) → 2NH3(g) CH40(I) CH₂O(g) + H₂(g) A₂H = -37 kJ AH = -91.8 kJ Using Hess's Law, the enthalpy of reaction for the following equation: N₂H4(1) + H₂(g) → 2NH3(g) is calculated to be A₂H = -65 kJ Record your 2-digit answer. Include sign; do not include units. Given the following data: 2CIF(g) + O₂(g) → Cl₂O(g) + F₂O(g) Use the following information to answer the next question. 2CIF3(g) + 20₂(g) → Cl₂O(g) + 3F₂O(g) 2F₂(g) + O₂(g) → 2F₂0(g) AH +167.4 kJ A,H+341.4 kJ A,H = -43.4 kJ Using Hess's Law,…
6
Using the provided table, determine the enthalpy for the reaction 2 NH, (g) + 3 N,O (g)→ 4 N, (g) + 3 H,0 (1) Substance AHť (kJ/mol) NH3 (g) -46.2 N2O (g) 81.6 N2 (g) H2O (1) -285.8
The complete combustion of Ethanol, C2H5OH (Molar Mass = 46.0 g/mol), proceeds as follows: C2H5OH (l) + 3 O2 (g) ——> 2CO2(g) + 3 H2O (l) H = -555kj What is the enthalpy change for the combustion of 15.0 g of ethanol? Show brief calculation steps
Tetrachloromethane, CCl4, is formed from methane and chlorine in the following reaction: CH4 (g) + 4 Cl₂ (g) → 4 HCl(g) + CCl4 (g) = Calculate A₁H, the enthalpy change for this reaction, using the enthalpies of formation of CO₂ (g), H₂O(l), and CCl4 (g), (▲ƒ H° = enthalpy changes for the following reactions: CH4 (g) + 2 O2(g) → 2 H₂O(l) + CO₂(g) ΔΗ° :-890.4 kJ/mol-rxn 2 HCl(g) → H₂(g) + Cl₂ (g) ΔΗ° +184.6 kJ/mol-rxn = ΔΗ° = Compound AfH (kJ/mol) H₂O(g) CO₂(g) -285.8 -393.5 kJ/mol-rxn - 95.98 kJ/mol), and the
During volcanic eruptions, hydrogen sulfide gas is given off and oxidized by air according to the following chemical equation: 2 H2S(g) + 3 O2(g) → 2 SO2(g) + 2 H;O(g) Calculate the change in enthalpy of the reaction using the following information: 3 S(s) + 2 H2O(g)→ 2 H2S(g) + SO2(g) AH°¡ = 146.9 kJ/mol %3D S(s) + O2(g) → SO2(g) AH°{ = -296.4 kJ/mol %3D
Carbon monoxide , CO(g),can react with hydrogen, H2 (g), to produce methane, CH4 (g), and water vapour. CO(g) + 3H2 (g) CH4 (g) + H2 O(g) Given the following equations, use Hess's law to determine the the enthalpy of reaction. 1) H2 (g) + ½ O2 (g) → H2 O(g) ∆ Ho = - 241.8 KJ 2) CO(g) + ½ O2 (g) CO2 (g) ∆ Ho = - 283.0 KJ 3) 2 CO2 (g) + 2H2 (g) CH4 (g) + CO2 (g) ∆ Ho = - 247.1 KJ
Ozone, O3(g), is a form of elemental oxygen that is important in the absorption of ultraviolet radiation in the stratosphere. It decomposes to O2(g) at room temperature and pressure according to the following reaction: 2O3(g)→3O2(g)ΔH=−284.6kJ Which has the higher enthalpy under these conditions, 2 O3(g)O3(g) or 3 O2(g)O2(g)?
7.7 Liquid Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2 C8H18(l) + 25O2(g) → 16CO2(g) + 18H2O(l); ΔHoreax = -11,020 kJ/mol Calculate the standard enthalpy of formation of octane, givenΔHof [ CO2(g)] = -393.5 kJ/molΔHof [ H2O(l)] = -285.8 kJ/mol
4. Using ethanol as a fuel reduces greenhouse gas emissions by 40-50% when compared directly to gasoline. Calculate the enthalpy change for the combustion of ethanol, using the enthalpies of formation for C2H5OH), CO2(g), and H2Ou, located on the chart provided for the following reaction: C2H5OH(1) + 302(g) → 2CO2(g) + 3H2O1)