Changing Temperature

Part of the Energy, Rates and Equilibrium section of Coddy's Chemistry journey. Lesson 30 of 35.

Exothermic forward: heat is a product. Heating shifts left; cooling shifts right.

Endothermic forward: heat is a reactant. Heating shifts right.

Only temperature changes $K$ : a shift right makes it bigger, a shift left smaller.

Challenge

A Haber reactor is run hotter:

$\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleftharpoons 2\mathrm{NH_3(g)} \qquad \Delta H = -92\ \mathrm{kJ}$

Which way does the equilibrium shift, and what happens to K?

Try it yourself

EquilibriumWhich way does it shift?

N₂(g)3 H₂(g)2 NH₃(g)

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Energy, Rates and Equilibrium

1Energy in Reactions

4Rates of Reaction

7Practice Problems

2Bond Energies

5Equilibrium

3Changes of State

6Changing an Equilibrium