Which one of the following reactions does not occur?

Question

Which one of the following reactions does not occur? (A) F 2+2 Cl - longrightarrow 2 F -+ Cl 2 (B) Cl 2+2 F - longrightarrow 2 Cl -+ F 2 (C) Br 2+2 I - longrightarrow 2 Br -+ I 2 (D) Cl 2+2 Br - longrightarrow 2 Cl -+ Br 2

Tardigrade Admin · Accepted Answer

With progressive increase in atomic number, the reduction potential of halogens decreases, thus oxidising power also decreases. Hence, a halogen with lower atomic number will oxidise the halide ion of higher atomic number and therefore, will liberate them from their salt solution.
Hence, the reaction

C l_{2} + 2 F^{-} ⟶ 2 C l^{-} + F_{2}

is not possible.

Q. Which one of the following reactions does not occur?

$F_{2} + 2 C l^{-} ⟶ 2 F^{-} + C l_{2}$

$C l_{2} + 2 F^{-} ⟶ 2 C l^{-} + F_{2}$

$B r_{2} + 2 I^{-} ⟶ 2 B r^{-} + I_{2}$

$C l_{2} + 2 B r^{-} ⟶ 2 C l^{-} + B r_{2}$

Q. Which one of the following reactions does not occur?

F2​+2Cl−⟶2F−+Cl2​

Cl2​+2F−⟶2Cl−+F2​

Br2​+2I−⟶2Br−+I2​

Cl2​+2Br−⟶2Cl−+Br2​

$F_{2} + 2 C l^{-} ⟶ 2 F^{-} + C l_{2}$

$C l_{2} + 2 F^{-} ⟶ 2 C l^{-} + F_{2}$

$B r_{2} + 2 I^{-} ⟶ 2 B r^{-} + I_{2}$

$C l_{2} + 2 B r^{-} ⟶ 2 C l^{-} + B r_{2}$