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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

For a photochemical reaction A → B , 1.0 × 1 0 - 5 mole of B were formed on absorbing 1.2 × 1 0 19 quanta each of λ = 360 nm. The quantum efficiency is given by

Options

  1. A0.50
  2. B1
  3. C0.1
  4. D0.2

Correct answer

A. 0.50

Step-by-step solution

Number of mol of A reacted = 1 × 1 0 - 5 Number of molecules of A = 1 × 1 0 - 5 × 6.02 × 1 0 23 Quantum efficiency = 6.02 × 1 0 18 1.2 × 1 0 19 = 0.50

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