Chemistry · Photochemistry

In a photochemical reaction scheme where P2 absorbs light to form 2Q (step 1 with absorbed light intensity Ia and quantum yield of unity) and Q reacts further via a second-order recombination process (2Q → P2 with rate constant k1) or deactivation, the steady-state concentration of Q is given by:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Ia[P2]k1 + k2
2Iak1 + k2
3(Ia[P2]k1 + k2)1/2
4Iak1 + k21/2✓

Correct answer

Iak1 + k21/2

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In a photochemical reaction scheme where P2 absorbs light to form 2Q (step 1 with absorbed light intensity Ia and quantum yield of unity) and Q reacts further via a second-order recombination process (2Q → P2 with rate constant k1) or deactivation, the steady-state concentration of Q is given by:

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In a photochemical reaction scheme where P2 absorbs light to form 2Q (step 1 with absorbed light intensity Ia and quantum yield of unity) and Q reacts further via a second-order recombination process (2Q → P2 with rate constant k1) or deactivation, the steady-state concentration of Q is given by:

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