1)
a) 2Al+3S⇒Al₂S₃
b) N₂+3H₂⇒2NH₃
c) 2Pb+O₂⇒2PbO
d) 2N₂O⇒2N₂+O₂
e) 2AuCl⇒2Au+Cl₂
f) 2Au₂O₃⇒4Au+3O₂
g) Pb₃O₄+4H₂⇒3Pb+4H₂O
h)PbO₂+2C⇒Pb+2CO
i) 2CrO₃+3C⇒2Cr+3CO₂
j)Fe₂O₃+3Mg⇒2Fe+3MgO
k) MgO+H₂⇒Mg+H₂O
2)
2Fe+O₂⇒2FeO
4Na+O₂⇒2Na₂O
4P+5O₂⇒P₄O₁₀
4Fe+3O₂⇒2Fe₂O₃
4Al+3O₂⇒2Al₂O₃
3)
a) 4Cu+O₂⇒2Cu₂O
b)2Na+Cl₂⇒2NaCl
c) Sn+2S⇒SnS₂
d) 2P+5S⇒P₂S₅
e) 4Fe+3O₂⇒2Fe₂O₃
f) Mg+Cl₂⇒MgCl₂
g) 2Al+3S⇒Al₂S₃
4)
K₂O+H₂O⇒2KOH
MgO+H₂O⇒Mg(OH)₂
5)
1.2Mg+O₂⇒2MgO
2.MgO+H₂O⇒Mg(OH)₂
3.Mg+2H₂O⇒Mg(OH)₂+H₂
6)
a) 3Mg(OH)₂+2H₃PO₄⇒Mg₃(PO₄)₂+6H₂O
b) 2NaOH+H₂SO₄⇒Na₂SO₄+2H₂O
c) 6K+2H₃PO₄⇒2K₃PO₄+3H₂
d) Fe₂O₃+6HCl⇒2FeCl₃+3H₂O
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1)
a) 2Al+3S⇒Al₂S₃
b) N₂+3H₂⇒2NH₃
c) 2Pb+O₂⇒2PbO
d) 2N₂O⇒2N₂+O₂
e) 2AuCl⇒2Au+Cl₂
f) 2Au₂O₃⇒4Au+3O₂
g) Pb₃O₄+4H₂⇒3Pb+4H₂O
h)PbO₂+2C⇒Pb+2CO
i) 2CrO₃+3C⇒2Cr+3CO₂
j)Fe₂O₃+3Mg⇒2Fe+3MgO
k) MgO+H₂⇒Mg+H₂O
2)
2Fe+O₂⇒2FeO
4Na+O₂⇒2Na₂O
4P+5O₂⇒P₄O₁₀
4Fe+3O₂⇒2Fe₂O₃
4Al+3O₂⇒2Al₂O₃
3)
a) 4Cu+O₂⇒2Cu₂O
b)2Na+Cl₂⇒2NaCl
c) Sn+2S⇒SnS₂
d) 2P+5S⇒P₂S₅
e) 4Fe+3O₂⇒2Fe₂O₃
f) Mg+Cl₂⇒MgCl₂
g) 2Al+3S⇒Al₂S₃
4)
K₂O+H₂O⇒2KOH
MgO+H₂O⇒Mg(OH)₂
5)
1.2Mg+O₂⇒2MgO
2.MgO+H₂O⇒Mg(OH)₂
3.Mg+2H₂O⇒Mg(OH)₂+H₂
6)
a) 3Mg(OH)₂+2H₃PO₄⇒Mg₃(PO₄)₂+6H₂O
b) 2NaOH+H₂SO₄⇒Na₂SO₄+2H₂O
c) 6K+2H₃PO₄⇒2K₃PO₄+3H₂
d) Fe₂O₃+6HCl⇒2FeCl₃+3H₂O