WAEC - Chemistry (2018 - No. 36)
The change in the oxidation state of iron in the reaction represented by the equation: \(2FeCl_{3} + H_{2}S \to 2FeCl_{2} + 2HCl + S\) is
+2 to +3
0 to +2
+3 to +2
+3 to 0
Explication
The oxidation number of Iron in \(FeCl_{3}\) = +3. The oxidation number in \(FeCl_{2}\) = +2.