Write down equations for the following reactions: — Physical Chemistry Chemistry Question
Reaction Equations
Write down equations for the following reactions:
2.1.
Oxidation of chromium(III) chloride with bromine in alkaline solution (KOH).
Model Answer
2 CrCl3 + 3 Br2 + 16 KOH → 2 K2CrO4 + 6 KBr + 6 KCl + 8 H2O
2.2.
Oxidation of potassium nitrite with potassium permanganate in acid solution (H2SO4).
Model Answer
5 KNO2 + 2 KMnO4 + 3 H2SO4 → 2 MnSO4 + K2SO4 + 5 KNO3 + 3 H2O
2.3.
Action of chlorine on lime water (Ca(OH)2) in a cold reaction mixture.
Model Answer
Cl2 + Ca(OH)2 → CaOCl2 + H2O
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