Getting to Know the World Scientifically by Paul Needham

Getting to Know the World Scientifically by Paul Needham

Author:Paul Needham
Language: eng
Format: epub
ISBN: 9783030402167
Publisher: Springer International Publishing


This implies, if anything, that a volume of steam comprises only half as many particles as the same volume of hydrogen. Avogadro’s interpretation was different, in line with his own hypothesis. He proposed that hydrogen and oxygen comprise diatomic molecules, leading him to represent the reaction in modified Berzelius notation as follows:

Since this is how the reaction is formulated today it may strike us as the better proposal. But Avogadro had no way of independently confirming the diatomic structure of hydrogen and oxygen, and we should be wary of allowing our contemporary knowledge to lead us to view Avogadro’s proposal as anything but an ad hoc manoeuvre to save his hypothesis. As Frické (1976) points out, were two volumes of hydrogen to combine with one of oxygen yielding n volumes of steam, then Avogadro would have represented the reaction by



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