A Common Way of Initiating Certain Chemical Reactions with Light $\rarr$

question 97

Multiple Choice

A common way of initiating certain chemical reactions with light involves the generation of free halogen atoms in solution. If DH for the reaction Cl₂(g) $\rarr$ 2Cl(g) is 242.8 kJ/mol, what is the longest wavelength of light that will produce free chlorine atoms in solution

• A) 246.3 nm
• B) 349.3 nm
• C) 465.2 nm
• D) 492.6 nm
• E) 698.6 nm

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