Single Choice

Which of the following is the best evidence for the validity of a proposed reaction mechanism?

AThe same mass of catalyst is present at the end of the reaction as it was at the beginning.
Correct Answer
BAn experimenter found spectrophotmetric data consistent with the presence of a reaction intermediate in the proposed mechanism.
CReaction rate data suggests that the rate of the reaction is approximately what is expected.
DThe product proposed by the mechanism was formed.

Solution

A proposed reaction mechanism is considered valid in many ways and one of the way being the reaction rate data suggests that the rate of reaction is approximately equal to what is expected.

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