Question

Which one of the following halogen liberates oxygen, when passed through hot concentrated KOH solution ?

• A. $I_2$
• B. $Cl_2$
• C. $Br_2$
• D. $F_2$

Answer 1

Answer: (D)

$F_2$

Answer 2

$\ce{2F_2 + 4KOH -> 4KF + O_2 + 2H_2O}$
Some $O_3$ is also produced.