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a)2 Na + Cl₂ -> 2 NaCl
b)2 Al + 3 Cl₂ -> 2 AlCl₃
c)Cu +Cl₂ -> CuCl₂
d)Fe + S -> FeS
2)
a) 2 Na + 2 HCl -> 2 NaCl +H₂
2 Na + 2 HNO₃ -> 2 NaNO₃ + H₂
2 Na + H₂SO₄ -> Na₂SO₄ + H₂
6 Na + 2 H₃PO₄ -> 2 Na₃PO₄ + 3 H₂
b)Ca + 2 HCl -> CaCl₂ + H₂
Ca + 2 HNO₃ -> Ca(NO₃)₂ +H₂
Ca + H₂SO₄ -> CaSO₄ + H₂
3 Ca + 2 H₃PO₄ ->Ca₃(PO₄)₂ + 3 H₂