Question

Which of the following ions will liberate iodine when treated with $KI$ ?

• A. $C{u}^{2+}$
• B. $F{e}^{2+}$
• C. $P{b}^{2+}$
• D. $S{n}^{2+}$

Answer 1

Answer: (A)

$C{u}^{2+}$ ions can oxidize iodide to iodine.