INTRODUCTION TO CHEMISTRY(LL)-W/CONNECT
5th Edition
ISBN: 9781260264920
Author: BAUER
Publisher: MCG
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Chapter 10, Problem 19QP
Interpretation Introduction
Interpretation:
The phase change in the given molecular diagram is to be identified and whether the reaction is exothermic or endothermic is to be analyzed.
Concept Introduction:
Sublimation is the process of conversion of a substance from the solid phase to the gaseous phase without changing into the liquid state.
An exothermic reaction is the
An endothermic reaction is the chemical reaction in which the absorption of energy from its surroundings in the form of heat takes place.
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MISSED THIS? Read Section 19.9 (Pages 878-881); Watch IWE 19.10
Consider the following reaction:
CH3OH(g)
CO(g) + 2H2(g)
(Note that AG,CH3OH(g) = -162.3 kJ/mol and AG,co(g)=-137.2 kJ/mol.)
Part A
Calculate AG for this reaction at 25 °C under the following conditions:
PCH₂OH
Pco
PH2
0.815 atm
=
0.140 atm
0.170 atm
Express your answer in kilojoules to three significant figures.
Ο ΑΣΦ
AG = -150
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kJ
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Calculate the free energy change under nonstandard conditions (AGrxn) by using the following relationship:
AGrxn = AGrxn + RTInQ,
AGxn+RTInQ,
where AGxn is the standard free energy change, R is the ideal gas constant, T is the temperature in kelvins, a
is the reaction quotient.
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Chapter 10 Solutions
INTRODUCTION TO CHEMISTRY(LL)-W/CONNECT
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