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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Dinitrogen monoxide, N2O, can decompose to nitrogen and oxygen gas:

2 N2O(g) → 2 N2(g) + O2(g)

Use bond dissociation enthalpies to estimate the enthalpy change for this reaction.

Interpretation Introduction

Interpretation: The enthalpy change for the given reaction should be determined by using bond dissociation enthalpies.

Concept Introduction:

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

Explanation

The enthalpy change for the given reaction is determined by considering the broken bonds and bonds formed in the reaction. The enthalpy change is as follows,

ΔrH=4(ΔHN-O)-[2ΔHNN+ΔHO=O]

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