Which of the following reactions will occur? 1 . A r N 2 + + C u B r → A r B r 2 . 3 . A r N 2 + + H 3 P O 2 → H 2 O A r H 4 . A r N 2 + + I ⊖ → A r l Select the correct answer using the order given below

Step-by-step solution

The reaction with phenol is carried out the alkaline medium only (i.e., with phenoxide ion). The alkaline medium in 2 is not given. Here 1, 3 and 4 reactions are possible. 1 . A r N + 2 + C u B r → A r B r + N 2 3 . A r N + 2 + H 3 P O 2 → H 2 O A r H + H 3 P O 3 + N 2 4 . A r N + 2 + I - → A r I + N 2