BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Enthalpy changes for the following reactions can be determined experimentally:

N2(g) + 3 H2(g) → 2 NH3(g)

ΔrH° = –91.8 kJ/mol-rxn

4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g)

ΔrH° = –906.2 kJ/mol-rxn

H2(g) + ½ O2(g) → H2O(g)

ΔrH° = –241.8 kl/mol-rxn

Use these values to determine the enthalpy change for the formation of NO(g) from the elements (an enthalpy change that cannot be measured directly because the reaction is reactant-favored).

½ N2(g) + ½ O2(g) → NO(g) ΔrH° = ?

Interpretation Introduction

Interpretation:

The enthalpy change for the formation of NO has to be determined.

Concept Introduction:

If a reaction proceeds in two or more other reaction,ΔrH0 for the overall process is the sum of ΔrH0 values of those reactions-Hess’s law.

Explanation

Divide the equation 2 by 2

  2N2+6H24NH3                   ΔH=183.6kJ

  4NH3+5O24NO+6H2O       ΔH=-906.2kJ

Reverse the 3rd equation. And multiply by 6

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Partially completed proteins are not held for completion at a later time when the diet may improve. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What are the features of a healthy high-fat diet?

Understanding Nutrition (MindTap Course List)

Do the same types of gene control operate in bacterial cells and eukaryotic cells?

Biology: The Unity and Diversity of Life (MindTap Course List)

Find to three significant digits the charge and the mass of the following particles. Suggestion: Begin by looki...

Physics for Scientists and Engineers, Technology Update (No access codes included)