1.

The reaction conditions leading to the best yield of `C_(2)H_(5Cl` areA. `C_(2)H_(6)+Cl_(2)underset(light)overset(UV)rarr`B. `C_(2)H_(6)+Cl_(2)underset("room temperature")overset(Dark)rarr`C. `underset("Excess")(C_(2)H_(6))+Cl_(2)underset(light)overset(UV)rarr`D. `C_(2)H_(6)+underset(Excess)(Cl_(2))underset(light)overset(UV)rarr`

Answer» Correct Answer - C
If `C_(2)H_(6)` is in excess, then `Cl^(.)` radical will have the maximum probability of colliding with `C_(2)H_(6)` molecules to yield maximum amount of `C_(2)H_(5)Cl`. In contrast, `C_(2)Cl_(6)` is the main product if excess `Cl_(2)` is used.


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