This coal gas can be used as fuel: CO(g)+H2(g) +O2(g) → CO,(g)+H2O(g) Predict the change in enthalpy for this combustion reaction from the following equations: 2 C(s) + O₂(g) → 2 CO(g) C(s) + O₂(g) → CO₂(g) 2 H₂(g) + O2(g) → 2 H₂O(g) ΔΗ = -222kJ AH-394kJ AH-484kJ Reaction 1 2 3 Reverse? Yes/No Multiply or Divide? If yes, by what?

This coal gas can be used as fuel: CO(g)+H2(g) +O2(g) → CO,(g)+H2O(g) Predict the change in enthalpy for this combustion reaction from the following equations: 2 C(s) + O₂(g) → 2 CO(g) C(s) + O₂(g) → CO₂(g) 2 H₂(g) + O2(g) → 2 H₂O(g) ΔΗ = -222kJ AH-394kJ AH-484kJ Reaction 1 2 3 Reverse? Yes/No Multiply or Divide? If yes, by what?

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...

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Given the two thermochemical equations below, find the enthalpy change for the reaction: N2H4 (l) + H2 (g) → 2 NH3 (g) delta H = ? Given: N2O4 (g) + 3 H2 (g) → 2 NH3 (g) + 2 O2 (g) delta H = – 100.96 kJ N2O4 (g) + 2 H2 (g) → N2H4 (l) + 2 O2 (g) delta H = + 41.47 kJ Select one: a. – 142.43 kJ b. – 59.49 kJ c. + 41.47 kJ d. + 59.49 kJ e. + 142.43 kJ f. none of these g. – 100.96 kJ
Determine the enthalpy of the reaction: 3Fe,O; (s) + CO (g) → CO, (g) + 2Fe;O4 (s), given the following reactions. 38. Fe,O3 (s) + 3CO (g) → 2Fe (s) + 3CO, (g) AH= -28.0 kJ 3Fe (s) + 4CO2 (s) → 4CO (g) + Fe;O4 (s) AH =+12.5 kJ A) 40.5 +109 -59.0 -109
For which one of the following is the enthalpy of the reaction the same as the enthalpy of formation? A) 2 H (g) + Se (s) → H:Se (g) B) KOH (s) → K*(aq) + OH- (aq) C) 2 Fe (s) + 3 Cl2 (g) → 2 FeCl3 (s) D) Ni (s) + ½ O2 (g)- NiO (s)
and 2 Enthalpy #1.30 enoindice pled TT 2010 2D49.bs 22) When 1 mole of Fe2O3(s) reacts with H₂(g) to form Fe(s) and H2O(g) according to the following equation, 98.8 kJ of energy are absorbed. (6 Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H₂O(g) (pp) (20/d4 (pm) $40 D Reaclanis 13:48 SH Products endothermic, A endothermic, B (2) exothermic, A exothermic, B nad W (21 Enthalpy MOMS. Reactants Products (A) (B) Is the reaction endothermic or exothermic, and which of the enthalpy diagrams above represents grow olor and to noin (01 this reaction? SH GH TH A HOMH X HILD 08.10 Page 6 of 8
The first step in the production of nitric acid from ammonia involves the oxidation of NH3. 4 NH3(g) + 5 O₂ (g) → 4 NO(g) + 6 H₂O(g) 2 a Use standard enthalpies of formation from the table below to calculate the standard enthalpy change for this reaction. Species AfH (kJ/mol) NH3(g) -45.90 NO(g) +90.29 H₂O(g) -241.83 Standard enthalpy change Submit = kJ/mol-rxn
From the following heats of combustion, Reaction Heat of Combustion CH, CH₂OH() + 30, (g) - 2C0₂(g) + 3H₂0 (1) C(s, diamond) + O₂(g) → CO₂(g) - H₂ (g) + O₂(g) → H₂0 (1) calculate the enthalpy of formation of ethanol (CH, CH₂OH) from its elements: 2C (s, diamond) + 3H₂(g) + O₂(g) → CH₂CH₂OH (1) -1366.8 -395.4 -285.81 mol
See Periodic Table Table sugar (sucrose) is hydrolyzed to form glucose (a simple sugar) according to the following equation: CH,O1(s)+H,0(g) 2C,H,,0,(s) . Determine the enthalpy change for the hydrolysis reaction given the following information: C12H22011(s) + 120,(g) → 12CO, (g) + 11H,0(g) ΔΗ Ixn = -5640 kJ %3D CH1206(s) +60,(g) → 6CO,(g)+6H,0(g) ДН. Txn = -2800 kJ kJ
The balanced thermochemical equation for the combustion of exactly one mole of propane is: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O(l) ΔH = -2220 kJ/mol What is the enthalpy change for the reaction: 1.5 CO2 (g) + 2 H2O(l) → 0.5 C3H8 (g) + 2.5 O2 (g) ΔH = ?
Hot water heaters often use natural gas (methane) to generate heat. Methane and oxygen react to form carbon monoxide according to the overall equation: 2CH4(g)+3O2(g) = 2CO(g)+4H2O(g) The enthalpy of formation for each compound are as follows: CH4: - 74.6 O2: 0 CO: - 110.5 H2O: - 285.8 Part A: calculate the overall enthalpy change of the reaction. Part B: A typical water heater contains 40.0 gallons of water. After a long vacation, you come home and turn your water heater from "vacation mode" to hot. How many moles of methane must be combusted to heat the water in your water heater from 30.0°C to 48.0°C? The density of water is 3.79 kg/gal, the specific heat capacity of water is 4.182 J/g°C, and the water heater has a heat capacity of 850.0 J/g°C.
（1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g) ΔHrxn = +254.3 kJ What will be the enthalpy change (in kJ) if 0.471 mol B reacts in excess A? （2）Consider the reaction: C (s) + O2 (g) → CO2 (g) ΔHrxn = -393.5 kJ What mass of carbon (in g) must be reacted via this mechanism to release 581.2 kJ of heat?
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