A.将铁粉加入稀硫酸中:2Fe+6H+=2Fe3++3H2↑ |
B.氢氧化铝溶于盐酸:Al(OH)3+3H+=Al3++3H2O |
C.将磁性氧化铁溶于盐酸:Fe3O4+8H+=3Fe3++4H2O |
D.将氧化钠溶于水中:O2-+H2O=2OH- |
A.Na2SO4=2Na++SO42- | B.Ba(OH)2=Ba2++OH2- |
C.Al2(SO4)3=2Al3++3SO42- | D.Ca(NO3)2=Ca2++2(NO3)2- |
A.Al2(SO4)3=2Al3++3(SO4)2- | B.NaHSO4=Na++H++SO42- |
C.MgCl2=Mg2++Cl2- | D.Ba(OH)2=Ba2++2OH- |
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