In the reaction 2FeCl₃ + H₂S → 2FeCl₂ + 2HCl + S, the reducing agent is:
A. HCl
B. FeCl₂
C. H₂S
D. FeCl₃
Answer: Option C
Solution (By JKSSB Mock Tests)
H₂S is oxidized (S²⁻ → S, loss of electrons), so it acts as the reducing agent. FeCl₃ is reduced (Fe³⁺ → Fe²⁺) and acts as oxidizing agent. The substance oxidized is the reducing agent.
Explanation:
A separating funnel allows immiscible liquids to form layers; the denser liquid is drained from the bottom. Fractionating column is for miscible liquids with close boiling points, condenser for distillation, centrifuge for separating fine solids or liquids of different densities by spinning.
Explanation:
Na₂CO₃ is formed from NaOH (strong base) and H₂CO₃ (weak acid). Its aqueous solution is basic due to hydrolysis: CO₃²⁻ + H₂O ⇌ HCO₃⁻ + OH⁻. Strong acid + strong base salts are neutral (NaCl).
Explanation:
Haber process: N₂ + 3H₂ ⇌ 2NH₃ using finely divided iron catalyst with promoters (K₂O, Al₂O₃). Pt in Ostwald for HNO₃, V₂O₅ in Contact for H₂SO₄, Ni in hydrogenation.
No comments yet. Be the first to start the discussion!