Question

Расставить коэффициенты и написать какая реакция H2SO4+Al2O3=>Al2(SO4)3+H2OFeCl3+Zn=>ZnCl+FeNaOH+H3PO4=>NaPO4+H2OCH4=>C+H2H2PO4+BAO=>BA3(PO4)2+H2OCuCl2+Al=>AlCl3+CuCa(OH)2+HNO3=>Ca(NO3)2+H2OKNO3=>KNO2+O2HNO3+Na2O=>NaNO3+H2OHCl+Al=>AlCl3+H2Al(OH3)+H2SO4=>Al(SO4)+H2O

Answer 1

3H2SO4 + Al2O3 → Al2(SO4)3 + 3H2O (реакция обмена);

2FeCl3 + 3Zn → 3ZnCl2 + 2Fe (реакция замещения);

3NaOH + H3PO4 → Na3PO4 + 3H2O (реакция обмена).

Answer 2

H2SO4 + Al2O3 -> Al2(SO4)3 + H2O (This is a double displacement reaction)

FeCl3 + Zn -> ZnCl2 + Fe (This is a single displacement reaction)

NaOH + H3PO4 -> Na3PO4 + H2O (This is a double displacement reaction)

CH4 -> C + 2H2 (This is a decomposition reaction)

H3PO4 + BaO -> Ba3(PO4)2 + H2O (This is a double displacement reaction)

CuCl2 + 2Al -> 2AlCl3 + Cu (This is a single displacement reaction)

Ca(OH)2 + 2HNO3 -> Ca(NO3)2 + 2H2O (This is a double displacement reaction)

KNO3 -> KNO2 + O2 (This is a decomposition reaction)

HNO3 + Na2O -> 2NaNO3 + H2O (This is a double displacement reaction)

HCl + Al -> AlCl3 + H2 (This is a single displacement reaction)

Al(OH)3 + H2SO4 -> Al2(SO4)3 + 3H2O (This is a double displacement reaction)