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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

Use the bond dissociation enthalpies in Table 8.8 to estimate the enthalpy change for the decomposition of urea (Question 30) to hydrazine, H2N—NH2, and carbon monoxide (Assume all compounds are in the gas phase.)

Interpretation Introduction

Interpretation: The enthalpy change for the decomposition of Urea to Hydrazine, NH2-NH2 and Carbon Monoxide should be determined

Concept Introduction:

Bond length:

Bond distance or bond length is the average distance between nuclei of two bonded atoms in a molecule.

It is a transferable property of a bond between atoms of fixed types

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 calculation of enthalpy change for the decomposition of Urea to Hydrazine,NH2-NH2 and Carbon Monoxide is as follows,

ΔrH=2(ΔHC-N)+ΔHC=O-[ΔHN-N+ΔHC=O

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