Сравните коэффициенты перед H₂O, когда следующие реакции уравнены наименьшими целыми числами.
a) H₂S + HNO₃ → S + NO + H₂O
b) MnO₂ + HBr → MnBr₂ + Br₂ + H₂O
c) H₂S + SO₂ → S + H₂O

  1. a < c < b
  2. b = c < a
  3. c < b < a
  4. b < a < c

📝 Detailed explanation

a) коэф. H₂O = 4; b) = 2; c) = 2. Значит b = c < a.
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