a, HBr ( axit bronhidric), \(H_2SO_3\) (axit sunfuro), \(H_3PO_4\) (axit photphoric), \(H_2SO_4\) (axit sunfuric )
b. \(Mg(OH)_2\) (magie hidroxit), \(Fe(OH)_3\) (sắt (III) hidroxit), \(Cu(OH)_2\) (đồng (II) hidroxit)
c. \(Ba(NO_3)_2\) (bari nitrat), \(Al_2(SO_4)_3\) (nhôm sunfat ), \(Na_2SO_3\)(natri sunfit ), ZnS (kẽm sunfua ), \(Na_2HPO_4\) (natri hidrophotphat), \(NaH_2PO_4\) (natri dihirophotphat)
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