Question

a) The photochemical dissociation of
gaseous HI to form normal H2 and I2
requires radiation of 4040 Å. Determine
the molar heat of dissociation of HI.​

Answer 1

Answer:

Solution

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Correct option is

A

3×10

22

As per Avogadro hypothesis ,

1 mole HI = 6.023×10

23

numbers of HI molecules

0.01 mole HI= 6.023×10

21

numbers of HI molecules

Quantum yield is defined as

Quantum yield = Molecules decomposed / photon absorbed

photon absorbed = Molecules decomposed /Quantum yield