Question

Which reaction is not feasible?

• A. $\ce{2KI + Br2 -> 2KBr + I2}$
• B. $\ce{2KBr + I2 -> 2KI + Br2}$
• C. $\ce{2KBr +Cl2 -> 2KCl + Br2}$
• D. $\ce{2H2O+ 2F2 -> 4HF +O2}$

Answer 1

Answer: (B)

$\ce{2KBr + I2 -> 2KI + Br2}$

Answer 2

${2KBr + I2 -> 2KI + Br2}$ reaction is not possible because Br- ion is not oxidised in ${Br_2}$ with ${I_2}$ due to higher electrode (oxidation) potential of ${I_2}$ than bromine.