Chemistry - Redox Reactions Question with Solution | TestHub

Fe³⁺ is a good oxidizing agent and can be reduced to Fe²⁺ by substances that act as reducing agents:

SnCl₂ (Sn²⁺) → strong reducing agent, reduces Fe³⁺ → Fe²⁺

H₂S (acidic medium) → reduces Fe³⁺ to Fe²⁺ while forming S

KI (I⁻) → I⁻ gets oxidized to I₂, Fe³⁺ reduced to Fe²⁺

Exposure to air (O₂) → opposite effect; it oxidizes Fe²⁺ to Fe³⁺

So, the correct options are:

B, C, D