Complete Question
The complete question is shown on the first uploaded image
Answer:
The balanced chemical equation of a bi molecular elementary reaction that would complete the proposed mechanism is
[tex]CH2CH2Cl^+ (g) + Cl^- (g) ---> CH2CH2Cl2[/tex]
Step-by-step explanation:
The reason the reaction above is is the reasonable second step is that it both involves carbonation and Cl⁻ species abd hence it is bi molecular in nature.