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HgCl2 + 2KI ------------ HgI2 + 2KCl
4NH3 + 5O2 ----------- 4NO + 6H2O
Al2O3 + 6HCl ---------- 2AlCl3 + 3H2O
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Answer: a. HgCl₂ + 2KI = HgI₂ + 2KCl
b. 2NH₃ + 5/2O₂ = 2NO + 3H₂O
c. Al₂O₃ + 6HCl = 2AlCl₃ + 3H₂O
d. 2MnO₂ + 2H₂SO₄ = 2MnSO₄ + 2H₂O + O₂
e. MnO₂ + 4HCl = MnCl₂ + Cl₂ + 2H₂O
f. (NH₄)₂SO₄ + 2NaOH = Na₂SO₄ + 2NH₃ + 2H₂O
g. NH₄NO₃ = N₂O + 2H₂O
h. BaO₂ + 2HCl = BaCl₂ + H₂O + 1/2O₂
i. Na₂O₂ + H₂O = 2NaOH + 1/2O₂
j. CuSO₄ + 2KI = CuI + I₂ + K₂SO₄
k. 4Zn + 10HNO₃ = 4Zn(NO₃)₂ + 5H₂O + N₂O ( Correction-done)
l. 2NaHCO₃ = Na₂CO₃ + H₂O + CO₂
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