Use and modify some/all the reactions provided to form the indicated overall reaction according to Hess' Law. • If a reaction is not used in your Hess' Law process, include that indication by multiplying the reaction by "0" • If no modification is needed and the reaction is applied as written below, include that indication by multiplying the reaction by "1" • Use whole numbers and simple fractions (such as "2" or "1/2", not 0.5) and negative signs (such as "-2") where needed Then calculate and report the enthalpy change (in kJ) for the overall reaction in the indicated blank, including units with your written value and rounded to 1 decimal place. Overall Reaction: CS2(1) + 302(g) → CO2(g) +2SO2(g) Rxn # Reaction ΔΗ° (kJ) 1 C(s) → C(g) 716.67 2 C(s) + O2(g) → CO2(g) -393.5 3 3Fe(s) +202(g) → Fe3O4(s) -1118 4 C(s) + 2S (s) → CS2(1) 87.9 5 CH4(g) + O2(g) → CO2(g) + H₂O(g) -882.0 S(s) + O2(g) → SO2(g) -296.8 N2(g) + 4H2(g) + Cl2(g) → 2NH4Cl(g) -629.1 6 7

Use and modify some/all the reactions provided to form the indicated overall reaction according to Hess' Law. • If a reaction is not used in your Hess' Law process, include that indication by multiplying the reaction by "0" • If no modification is needed and the reaction is applied as written below, include that indication by multiplying the reaction by "1" • Use whole numbers and simple fractions (such as "2" or "1/2", not 0.5) and negative signs (such as "-2") where needed Then calculate and report the enthalpy change (in kJ) for the overall reaction in the indicated blank, including units with your written value and rounded to 1 decimal place. Overall Reaction: CS2(1) + 302(g) → CO2(g) +2SO2(g) Rxn # Reaction ΔΗ° (kJ) 1 C(s) → C(g) 716.67 2 C(s) + O2(g) → CO2(g) -393.5 3 3Fe(s) +202(g) → Fe3O4(s) -1118 4 C(s) + 2S (s) → CS2(1) 87.9 5 CH4(g) + O2(g) → CO2(g) + H₂O(g) -882.0 S(s) + O2(g) → SO2(g) -296.8 N2(g) + 4H2(g) + Cl2(g) → 2NH4Cl(g) -629.1 6 7

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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152 A 352.44 155 T 362.31 153 G 355.67 156 X 365.88 154 D 359.12 157 N 369.52 Consider the following reaction: AH = -532.6 kJ ΤΧ Calculate the heat that will be released when 29.87 grams of GX are formed? AG₂+2 XD - AD2 + 2 GX
1. How many KJ are used by a 154lb adult while sleeping for one hour? 2. In the specific heat equation the delta T symbol (?T) stands for?
A chemist measures the energy change ΔH during the following reaction: Cl2(g)+H2(g)→2HCl(g) =ΔH−184.kJ Use the information to answer the following questions. This reaction is... endothermic. exothermic. Suppose 46.0g of Cl2 react. Will any heat be released or absorbed? Yes, absorbed. Yes, released. No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. kJ Round your answer to 3 significant digits.
1.
enthalpy a... A chemist measures the energy change AH during the following reaction: 2 H,O(1) → 2 H,(9)+O%(g) AH=572. kJ Use the information to answer the following questions. endothermic. This reaction is... exothermic. Suppose 90.6 g of H,0 react. Yes, absorbed. Yes, released. Will any heat be released or absorbed? No. If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits. Explanation Check MacBook P
If 20.0 ml of 3.0 M HCI solution and 20.0 ml of 3.0 M NaOH solution at 215 Care mixed in a calorimeter with a heat capacity of 10 CalC (assume the density and specific heat of the solution is 1.05 g/ml and 0.94 Cal/g Crespectively). The temperature increased to 38.0C The molar heat of the neutralization reaction (in Cal/mol units) is equal to? O none O 6528.7 Cal/mol O 13057.3 Cal/mol O 136067 Cal/mol O 67883 Calmol
Consider these reactions: Reaction 1: H₂(g) + Cl₂(g) 2HCl(g) AH = -184.6 kJ Reaction 2: 20F2(g) O₂(g) + 2 F₂ (g) ΔΗ = -49.4 kJ Reaction 3: N₂(g) +20₂ (8) 2NO₂(g) ΔΗ = +66.4 kJ
Constants Periodic Table The standard enthalpy of formation (AH) is the enthalpy change that occurs when exactly 1 mol of a compound is formed from its constituent elements under standard conditions. The standard conditions are 1 atm pressure, a temperature of 25 °C, and all the species present at a concentration of 1 M.A"standard enthalpies of formation table" containing AH values might Part A What is the balanced chemical equation for the reaction used to calculate AH of BaCO3(s)? f fractional coefficients are required, enter them as a fraction (ie. 1/3) Indicate the physical states using the abbreviation (s). (1). or (g) for solid, liquid, or gas, respectively without indicating allotropes. Use (aq) for aqueous solution. look something like this: Substance AH Express your answer as a chemical equation. 218 kJ/mol H(g) H2(g) Ba(s) Ba (aq) > View Available Hint(s) O kJ/mol O kJ/mol AEO 538.4 kJ/mol C(g) 71 kJ/mol C(s) O kJ/mol DA chemical reaction does not occur for this question.…
Consider the reaction. 2Fe2O3⟶4Fe+3O2 Δ?∘rxn=+824.2 kJ The formation of 77.0 g77.0 g of Fe results in -the absorption of 15900 kJ15900 kJ of heat. -the absorption of 1140 kJ1140 kJ of heat. -the absorption of 284 kJ284 kJ of heat. -the release of 284 kJ284 kJ of heat. -the release of 1140 kJ1140 kJ of heat. -the release of 15900 kJ15900 kJ of heat.
6. When 1 g of fuel Y is burned in a bomb calorimeter, the temperature of the calorimeter increases by 8.5 *C. The bomb has a heat capacity of 768 J/ "C and is submerged in 1200 ml of water. What is the heat of combustion of fuel Y in kJ/mole. Molar mass of fuel Y = 78 g/mole
EXPERIMENTAL DATA ΔΗ -55.84 kJ/mol neutralization Mass of dry calorimeter, (g) 126.73 Initial burette reading, (mL) 0.31 Final burette reading, (mL) 14.31 Initial temperature of HCI, (°C) 22.30 Initial temperature of NaOH, (°C) 22.34 Mass of calorimeter and NaCl solution, (g) 156.89 Extrapolated temperature, T;, (°C) 38.26