Answered: The enthalpy of the reaction, ΔH°rxn,…

The enthalpy of the reaction, ΔH°rxn, in which sulfur dioxide is oxidized to sulfur trioxide 2SO2 (g) + O2 (g) → 2SO3 (g) is __________ kJ. Group of answer choices -543 -197 197 -1384 1087

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions

Section: Chapter Questions

Problem 64PS: The enthalpy change for the oxidation of styrene. C8H8, is measured by calorimetry. C8H8() + 10...

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Question

The enthalpy of the reaction, ΔH°_rxn, in which sulfur dioxide is oxidized to sulfur trioxide

2SO₂ (g) + O₂ (g) → 2SO₃ (g) is __________ kJ.

Group of answer choices

-543

-197

197

-1384

1087

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The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qH2O? What is qrxn? What is ΔHrxn? Is the reaction endothermic or exothermic?
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