Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined. Concept Introduction: In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished. In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time. Lifetime of a given unimolecular photochemical reaction can be determined using the given formula. τ = 1 k f w h e r e , k f = Rate constant

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Answer 1

Question

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

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Answer 2

Question

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

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Answer 3

Question

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

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Answer 4

Question

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

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Answer 5

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

Answer 6

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

Answer 7

Chapter 11, Problem 11E.1E

Interpretation Introduction

Interpretation:

Excited singlet state or excited triplet state is whether the most likely precursor of the photochemical reaction has to be determined.

Concept Introduction:

In fluorescence, the radiation that is emitted spontaneously ceases as soon as the (within nanoseconds) the exciting radiation gets extinguished.

In phosphorescence, an intersystem crossing to a triplet state takes place and hence the radiation that is emitted spontaneously will persist for more time.

Lifetime of a given unimolecular photochemical reaction can be determined using the given formula.

τ = 1kfwhere,kf = Rate constant

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 11 - Prob. 11A.1ST Ch. 11 - Prob. 11A.2ST Ch. 11 - Prob. 11A.3ST Ch. 11 - Prob. 11B.1ST Ch. 11 - Prob. 11B.2ST Ch. 11 - Prob. 11B.3ST Ch. 11 - Prob. 11B.4ST Ch. 11 - Prob. 11B.5ST Ch. 11 - Prob. 11C.1ST Ch. 11 - Prob. 11C.2ST

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