Interpretation:
The primary quantum yield has to be determined from the given data.
Concept introduction:
Primary quantum yield: The number of photo physical or photochemical events that lead to primary products divided by the number of photons absorbed by the molecule in the same interval.

Answer to Problem 17G.1ST
The primary quantum yield was
Explanation of Solution
The number of photochemical events is the number of decomposed molecules and is given as follows:
The energy absorbed by the substance is
Equating
Primary quantum yield:
Substituting (1) into the above relation,
Given values:
By substituting the known values, the primary quantum yield is calculated as follows,
The primary quantum yield was
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Chapter 17 Solutions
ATKINS' PHYSICAL CHEMISTRY
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