10.10Consider the following combustion reactions:2 C2H6(g) +7 O2(g) →4 CO2(g) + 6 H₂O(/)C(graphite) + O2(g) → CO2(g)Дене=-3120 kJmolAH = -393 kJ/molH2(g) + O2(g) → H₂O(1)AH = -286 kJ/molDetermine the standard enthalpy of formation of ethane gas. [4 sig. fig.]

Step 1: Step 2: Step 3: Step 4:

Answered: 10. 10 Consider the following…

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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2. Calculate AH for the reaction: CH4 (g) + 4 Cl2 (g) CCI4 (g) +4 HCl (g) Use the following reactions and given AH's. C (s) + 2 H2 (g) C (s) + 2 Cl2 (g) H2 (g) + Cl2 (g) CH4 (g) AH =-74.6 kJ CC14 (g) AH =-95.7 kJ 2 HCl (g) AH =-92.3 kJ 61 shot on moto g' power Crystal H.
Calorimetry: Question #3 Octane, C3H18 , is a constituent of gasoline, and burns in the presence of oxygen to produce water and carbon dioxide: 2 C3H18 (1) + 25 O2(g) → 16 CO2(9) + 18 H2O1) ΔΗ kJ/2mol %3D rxn C3H18 (1) When a 1.00-gram sample of octane is burned in a bomb calorimeter the temperature of the water and the calorimeter rises from 25.00°C to 33.20°C. If the heat capacity, Cbomb cal, of the empty bomb calorimeter is 837 J/°C, and the mass of the water is 1.200 kg: a) Calculate the heat, q, transferred, during the combustion, to the calorimeter: 6.86 kJ (calorimter) + qbomb cal = Cbomb cal • AT b) Calculate the heat, q, transferred, during the combustion, to the water: 41.2 kJ (1.200 kg H20) + 9H20 = + mH20 • AT • SH2O c) Calculate the enthalpy change (AHº rxn = kJ/2mol) for this reaction (2 mol of C3H18 (1): [ Select ] kJ/2 mol C3H18 (1)
Nitric acid, HNO3, reacts with potassium hydroxide as follows: HNO3(aq) + KOH(aq) ⟹ KNO3(aq) + H2O(l) A student places 55.0mL of 1.3M HNO3 in a coffee cup calorimeter, and noted that the temperature was 23.5oC. 55mL of 1.3M KOH also at 23.5oC was added. After quickly stirring with a thermometer, the temperature rose to 31.8oC. Calculate the heat generated by the reaction.
BE’s are: C=O 799, C–H 413, O–H 467, O–O 498, H–H 432 kJ/mol CO2(g) + 4H2(g) → CH4(g) + 2H2O(g) ΔHrxn° = ___ kJ (from ΔHf°s) ΔHrxn°(BE) = ___ kJ (from BEs) = (2x799+432-4x413-4x467) CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) ΔHrxn° = ___ kJ (from ΔHf°s) ΔHrxn°(BE) = ___ kJ (from BEs) ...Calculate ΔHrxn°s from both!
Given that H₂(g) + F₂(g) → 2HF(g) 2 H₂(g) + O₂(g) → 2H₂O(1) calculate the value of AHin for 2 F₂(g) + 2H₂O(1) AHixn= G B 6 AH = -546.6 kJ H AH-571.6 kJ 4 HF(g) + O₂(g) N M 9 0 L 70 kJ
When ammonia reacts with dinitrogen oxide gas (ΔHf° = 82.05 kJ/mol), liquid water and nitrogen gas are formed. How much heat (in kJ) is liberated or absorbed by the reaction that produces 365 mL of nitrogen gas at 25°C and 743 mm Hg? ΔHf° (kJ/mol) NH3(g) –46.1 H2O(l) –285.8 N2(g) 0 N2O(g) 82.05
A Moving to another question will save this response. Question 2 "A new element (Rr) has been synthesized and its properties analyzed. When 0.132g of RrO (s) is added to 166g of water at 24° Cin a coffee cup calorimeter, the following reaction occurs. RrO(s) + H 20(1) – Rr(OH) 2 (aq) AH = -74.8kJ/mol Given the molar mass for RrO is 62g/mol calculate the following moles of Rro round answer to 4 decimal places omit trailing zeroes 9 rxn in joules round answer to the nearest whole number 9 water in joules round answer to the nearest whole number Final temperature round answer to 1 decimal place omit trailing zeroes A Moving to another question will save this response. Chip
How do we get the answers (in blue) to this question?
Calcium oxide (CaO) is used to remove sulfur dioxide generated by coal-burning power stations: 2CaOs) + 2SO2lg) + O2(g) → 2CASO465) What is the heat (in kJ) involved for this removal process if 6.6 g of SO2 (64.07 g/mol) is converted? AH (CaO) = -635.6 kJ/mol AH (SO2) = -296.1 kJ/mol AH (CasO4) = -1432.7 kJ/mol
TUMU Consider these reactions: Reaction 1: H₂(g) + Cl₂(g) → 2HCl(g) AH = -184.6 kJ Reaction 2: 20F 2(g) → O₂(g) + 2 F₂ (g) Reaction 3: N₂(g) +202(g) →→→ 2NO₂(g) Use Reaction 1. Answer: AH = -49.4 kJ Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,152.0 kJ of energy is released from the system. Round to the nearest whole number. g AH = +66.4 kJ
Acetylene burns in air according to the following equation. C2H2(g) + 5/2 O2(g) 2 CO2(g) + H2O(g) H0rxn = -1255.8 kJ Given that H0f of CO2(g) = -393.5 kJ/mol and H0f of H2O(g) = -241.8 kJ/mol, what is H0f of C2H2(g)?

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10. 10 Consider the following combustion reactions: 2 C2H6(g) +7 O2(g) →4 CO2(g) + 6 H₂O(/) C(graphite) + O2(g) → CO2(g) Дене =-3120 kJmol AH = -393 kJ/mol H2(g) + O2(g) → H₂O(1) AH = -286 kJ/mol Determine the standard enthalpy of formation of ethane gas. [4 sig. fig.]