Question

Which of the following will displace the halogen from the solution of of halide
a $)B{r}_2$ added to an $NaCl$ solution
$b)C{l}_2$ added to a $KBr$ solution
$c)C{l}_2$ added to an $NaF$ solution
$d)B{r}_2$ added to to a $KI$ solution
Find the correct answer :

• A. a, b, c
• B. b, c
• C. b, d
• D. all are correct

Answer 1

Answer: (C)

b, d

$B{r}^{-}$ can reduce $C{l}_2$ to $C{l}^{-}$ $(E_{cell}=+ve)$
$I^{-}$ can reduce $B{r}_2$ to $B{r}^{-}$ $(E_{cell}=+ve)$
$E_{cell}=+ve$ in both case
$\therefore$ Reaction is feasible