undergoes photochemical dissociation into one normal oxygen atom and one oxygen atom, 1.2 eV more energetic than normal. The dissociation of into two normal atoms of oxygen requires 482.5 kJ/mol. The

Question

$O_2$ undergoes photochemical dissociation into one normal oxygen atom and one oxygen atom, 1.2 eV more energetic than normal. The dissociation of $O_2$ into two normal atoms of oxygen requires 482.5 kJ/mol. The maximum wavelength effective for photochemical dissociation of $O_2$ is (1 eV = 96.5 kJ/mol)

Prashant Kotian · Accepted Answer

Correct answer: D. E = 482.5/96.5 + 1.2 = 5.0 + 1.2 = 6.2 eV. λ_max = 1240/6.2 = 200 nm.

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