1.a)2Ca+O2=2CaO
b)Ca2CO3=2CaO+CO
B)Ca(OH)2=CaO+H2O
2.a)Na+2H2O=Na(OH)2+H2
b) NaO+H2O=Na(OH)2
3.a)2Al+3H2SO4=Al2(SO4)3+H2
b)Al2O3+3H2SO4=Al2(SO4)3+3H2O
B)2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O
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Answers & Comments
1.a)2Ca+O2=2CaO
b)Ca2CO3=2CaO+CO
B)Ca(OH)2=CaO+H2O
2.a)Na+2H2O=Na(OH)2+H2
b) NaO+H2O=Na(OH)2
3.a)2Al+3H2SO4=Al2(SO4)3+H2
b)Al2O3+3H2SO4=Al2(SO4)3+3H2O
B)2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O