Purchase Solution

Thermodynamics: Enthalpy Change

Not what you're looking for?

Ask Custom Question

Hi, hope you can help.

bond molar bond enthalpy/kj mol^-1
N-H 392
H-H 436
N=N (triple bond) 945
reaction 1: N2 (g) + 3H2 (g) = 2NH3(g)

Use the molar bond enthalpies above to show the overall enthalpy change for reaction one is -93kj mol^-1
show all steps in the calculation clearly.

State whether the reaction is endo or exothermic - i think it is exothermic and sketch a labelled diagram showing the internal energy changes for this reaction.

Write down the expression for the equilibrium constant k for the reaction. At 25 degrees celcuis the equilibrium concentrations of N2 are 1.0 x x10^-2,
H2 is 1.1 x 10 ^-2 moldm^-3 and for NH3 it is 9.8 x 10^-1.

Use these values to calculate the value ok K at this temperature.

Purchase this Solution

Solution Summary

This solution provides a detailed guide, including all the steps and diagrams, to solving the given physics problem.

Solution Preview

** Please see the attached file for the complete solution response **

enthalpy change

bond                     molar bond enthalpy/kj mol^-1
N-H                          391
H-H                          436
N=N (triple bond)    945
reaction 1: N2 (g) ...

Purchase this Solution

Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Basic Physics

This quiz will test your knowledge about basic Physics.

The Moon

Test your knowledge of moon phases and movement.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.