Question

Reason for low & high Quantrum yield
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Answer 1

Answer:

1.Excited molecules may get deactivated before they form products.

2. Excited molecules may lose their energy by collisions with non-excited molecules.

Answer 2

Reason for low quantum yield:

• The photochemical method may get backtracked due to some other reason.

• The Stimulated molecules lose its energy before they get reacts.

• For endothermic reactions, a number of photons absorbed are more whereas the product formed is less.

• When the active reactant collide with the wall of the container, the rate of reaction decreases and the product form is less.

Reason for High quantum yield:

• The absorption of radiation involves production of atom which starts the chain reaction.
• For exothermic reactions, the number of photons absorbed is less whereas the product formed is more.
• Those photochemical reaction in which free radicals are formed in the first step.
• The formed intermediate product which acts as a catalyst.
• The absorbed photon are less and product formed is more.

Learn more  about photochemical reaction

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