Classify each of the reactions according to one of the four reaction types summarized in the table below.ReactionSpontaneous Process?ТуреΔΗ' (system)AS (system) (Standard Conditions)1Exothermic, < 0Positive, > 0 Spontaneous at all temperatures. AS (universe) > 0.Exothermic, < 0Negative, <0 Depends on relative magnitudes ofAH° and AS°. Spontaneous at lower temperatures.Endothermic, > 0Positive, > 0 Depends on relative magnitudes of AH and AS". Spontaneous at higher temperatures.3Endothermic, > 0 Negative, < o Not spontaneous at any temperature. AS° (universe) < 0.4C6 H12O6 (s) + 6 02 (g) → 6 CO2 (g) + 6 H2O(l)a.A,H° = -673 kJ/mol-rxnA,S° = 60.4 J/K · mol-rxnO Spontaneous at all temperatures.O Spontaneous at lower temperatures.O Spontaneous at higher temperatures.ONot spontaneous at any temperature.b.ВаО(s) + C(graphite) — Ba(s) + СО(g)A,H° = 437.6 kJ/mol-rxnA,S° = 184.9 J/K· mol-rxnOSpontaneous at all temperatures.O Spontaneous at lower temperatures.O Spontaneous at higher temperatures.ONot spontaneous at any temperature.

Spontaneous reaction :- A reaction which takes place on its own without the need of any external…

Reaction Spontaneous Process? Туре ΔΗ (system) AS (system) (Standard Conditions) 1 Exothermic, < 0 Positive, > 0 Spontaneous at all temperatures. AS°(universe) > 0 Exothermic, < 0 Negative, <0 Depends on relative magnitudes ofAH° and AS°. Spontaneous at lower temperatures. 2 Endothermic, > 0 Positive >0 Depends on relative magnitudes of AH and AS°. Spontaneous at higher temperatures. Endothermic, > 0 Negative, < 0 Not spontaneous at any temperature. AS (universe) < 0. Cg H12O6 (s) + 6 02(g) → 6 CO2(g) + 6 H2O(£) a. A,H° = -673 kJ/mol-rxn A,S° = 60.4 J/K· mol-rxn OSpontaneous at all temperatures. OSpontaneous at lower temperatures. O Spontaneous at higher temperatures. ONot spontaneous at any temperature. b. BaO(s) + C(graphite) → Ba(s) + CO(g) A,H° = 437.6 kJ/mol-rxn A,S° = 184.9 J/K · mol-rxn O Spontaneous at all temperatures. O Spontaneous at lower temperatures. OSpontaneous at higher temperatures. ONot spontaneous at any temperature.

Reaction Spontaneous Process? Туре ΔΗ (system) AS (system) (Standard Conditions) 1 Exothermic, < 0 Positive, > 0 Spontaneous at all temperatures. AS°(universe) > 0 Exothermic, < 0 Negative, <0 Depends on relative magnitudes ofAH° and AS°. Spontaneous at lower temperatures. 2 Endothermic, > 0 Positive >0 Depends on relative magnitudes of AH and AS°. Spontaneous at higher temperatures. Endothermic, > 0 Negative, < 0 Not spontaneous at any temperature. AS (universe) < 0. Cg H12O6 (s) + 6 02(g) → 6 CO2(g) + 6 H2O(£) a. A,H° = -673 kJ/mol-rxn A,S° = 60.4 J/K· mol-rxn OSpontaneous at all temperatures. OSpontaneous at lower temperatures. O Spontaneous at higher temperatures. ONot spontaneous at any temperature. b. BaO(s) + C(graphite) → Ba(s) + CO(g) A,H° = 437.6 kJ/mol-rxn A,S° = 184.9 J/K · mol-rxn O Spontaneous at all temperatures. O Spontaneous at lower temperatures. OSpontaneous at higher temperatures. ONot spontaneous at any temperature.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter16: Thermodynamics: Directionality Of Chemical Reactions

Section: Chapter Questions

Problem 121QRT

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Question

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Classify each of the reactions according to one of the four reaction types summarized in the table below.
Reaction
Spontaneous Process?
Туре
ΔΗ' (system)
AS (system) (Standard Conditions)
1
Exothermic, < 0
Positive, > 0 Spontaneous at all temperatures. AS (universe) > 0.
Exothermic, < 0
Negative, <0 Depends on relative magnitudes ofAH° and AS°. Spontaneous at lower temperatures.
Endothermic, > 0
Positive, > 0 Depends on relative magnitudes of AH and AS". Spontaneous at higher temperatures.
3
Endothermic, > 0 Negative, < o Not spontaneous at any temperature. AS° (universe) < 0.
4
C6 H12O6 (s) + 6 02 (g) → 6 CO2 (g) + 6 H2O(l)
a.
A,H° = -673 kJ/mol-rxn
A,S° = 60.4 J/K · mol-rxn
O Spontaneous at all temperatures.
O Spontaneous at lower temperatures.
O Spontaneous at higher temperatures.
ONot spontaneous at any temperature.
b.
ВаО(s) + C(graphite) — Ba(s) + СО(g)
A,H° = 437.6 kJ/mol-rxn
A,S° = 184.9 J/K· mol-rxn
OSpontaneous at all temperatures.
O Spontaneous at lower temperatures.
O Spontaneous at higher temperatures.
ONot spontaneous at any temperature.

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