Identify the equation that shows the reaction of ethane with chlorine in the presence of ultraviolet light.
Show Hint
- C_2H_6 + Cl_2 C_2H_6Cl_2
- C_2H_6 + Cl_2 C_2H_4Cl_2 + H_2
- C_2H_6 + Cl_2 C_2H_5Cl + HCl
- C_2H_6 + Cl_2 2CH_3Cl
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Reaction Type:
Ethane is a saturated hydrocarbon (alkane). Alkanes undergo substitution reactions with halogens where hydrogen atoms are replaced one by one.
Step 2: The Role of UV Light:
UV light provides the energy required to break the Cl-Cl bond to start the free-radical chain reaction.
Step 3: Writing the Products:
One hydrogen atom from ethane (C_2H_6) is replaced by one chlorine atom to form chloroethane (C_2H_5Cl). The displaced hydrogen atom bonds with the second chlorine atom to form hydrogen chloride (HCl).
Step 4: Final Answer:
The balanced equation is C_2H_6 + Cl_2 C_2H_5Cl + HCl.
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