Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 2 - Atoms, Molecules, and Ions - Questions: 16

Answer

Dalton had to change the classification of water from $OH$ to $H_2O$ due to the findings of Lussac.

Work Step by Step

Dalton believed that water molecules only had one oxygen and one hydrogen molecule. However, Lussac, through careful experimentation, found that water molecules had two hydrogen molecules and one oxygen molecule.
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