Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen:1/2 Cl₂(g) + H₂O(g) = HCl(g) + 1/4 O₂(g)(a) What is the enthalpy change for the reverse reaction?AH reverseΔΗ=(b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation?kJ/mol.---Select---AH = 28.6 kJkJ/mol.(c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction?AH should ---Select---(d) If the (forward) reaction were written to consume liquid water, H₂O(1), instead of water vapor, would you expect the magnitude of AH to increase (becomemore positive), decrease (become more negative), or stay the same?

Enthalpy change of a reaction is a state function. If we reverse a chemical reaction than the sign…

Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen: 1/2 Cl₂(g) + H₂O(g) = HCl(g) + 1/4 O₂(g) (a) What is the enthalpy change for the reverse reaction? AHreverse kJ/mol. (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? kJ/mol. AH = ΔΗ = 28.6 kg (c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? --Select--- (d) If the (forward) reaction were written to consume liquid water, H₂O(1), instead of water vapor, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? AH should ---Select---

Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen: 1/2 Cl₂(g) + H₂O(g) = HCl(g) + 1/4 O₂(g) (a) What is the enthalpy change for the reverse reaction? AHreverse kJ/mol. (b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation? kJ/mol. AH = ΔΗ = 28.6 kg (c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction? --Select--- (d) If the (forward) reaction were written to consume liquid water, H₂O(1), instead of water vapor, would you expect the magnitude of AH to increase (become more positive), decrease (become more negative), or stay the same? AH should ---Select---

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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Concept explainers

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

Question

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Consider the reaction of chlorine with water vapor, H₂O(g) to form hydrogen chloride and oxygen:
1/2 Cl₂(g) + H₂O(g) = HCl(g) + 1/4 O₂(g)
(a) What is the enthalpy change for the reverse reaction?
AH reverse
ΔΗ=
(b) Balance the forward reaction with whole-number coefficients. What is AH for the reaction represented by this equation?
kJ/mol.
---Select---
AH = 28.6 kJ
kJ/mol.
(c) Which is more likely to be thermodynamically-favored, the forward reaction or the reverse reaction?
AH should ---Select---
(d) If the (forward) reaction were written to consume liquid water, H₂O(1), instead of water vapor, would you expect the magnitude of AH to increase (become
more positive), decrease (become more negative), or stay the same?

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