Photochemical Rxn

Question 1

Explain photo physical or photochemical rxn

Answer 1

R——–>R* ———–>I——–> P
<———– PHOTOCHEMICAL
PHOTOPHYSICAL

Question 2

When we use uv light
When we use x, g ray

Answer 2

Photochemical rxn
Radiological rxn

Question 3

L O R M I R U V X Y

Question 4

Einstein drapper law states tha

Answer 4

One molecule absord one photon and 1 mole of reactant absord 1 mole of photon

Question 5

Einstein ne iss process ko 2 step me divide kr diya

Answer 5

Primary process ( quantum yield =1)
Secondary process ( thermally controlled)

Question 6

Quantum yield mole =

Answer 6

Nahc/lambda no. Of moles/total energy

Question 7

Quantum yield =

Answer 7

hc/lambda× no. Of molecule related/ Et

Question 8

E=

Answer 8

Power×time

Question 9

10%of 40 joule energy

Answer 9

4 joule

Question 10

Why the rate of fluorescence is faster than phospho or isc

Answer 10

Follow selection rule
Spin angular momentum =0
Spin angular momentum is conserved

Question 11

Phosphorence

Answer 11

T1 TO S0
NOT FOLLOW SELECTION RULE
TAKES LONGER TIME

Question 12

Singlet state decay occur by

Answer 12

IC
ISC
FLUORO

Question 13

TrIplet state decay occur by

Answer 13

Phosphorescence

Question 14

Explain quencher

Answer 14

Excited molecule ko ground state me laa deta hai

Question 15

Parallel reaction

Answer 15

Reactant A changes to product B ,C