Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions: 86

Answer

See answer below.

Work Step by Step

Enthalpies of formation (kJ/mol): $H_2O(g):-241.83, CO_2(g):-393.509$ Hydrazine: $(2\times-241.83-50.6)\div 32.05\ g/mol=-16.66\ kJ/mol$ Dimethyl hydrazine: $(2\times-393.509+4\times-241.83-48.9)\div 60.10\ g/mol=-30.00\ kJ/mol$ 1,1-dimethylhydrazine produces more energy per unit of mass in combustion.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.