Na2SO4: Na +1, S +6, O -2
KClO3: K +1, Cl +5, O -2
Na2ClO3: Na +1, Cl +4, O -2
Na2CrO4: Na +1, Cr +6, O -2
NH4ClO4: N -3, H +1, Cl +7, O -2
BaMnO4: Ba +2, Mn +6, O -2
1) H3C-CH(OSO3H)-CH3 + H2O = H3C-CH(OH)-CH3 (А) + H2SO4;
2) H3C-CH(OH)-CH3 + PCl5 = H3C-CH(Cl)-CH3 (Б) + POCl3 + HCl;
3) H3C-CH(Cl)-CH3 + Mg = H3C-CH(MgCl)-CH3 (В);
4) C6H5-CHO + H3C-CH(MgCl)-CH3 = C6H5-CH(OMgCl)-CH(CH3)2 (Г);
5) C6H5-CH(OMgCl)-CH(CH3)2 + H2O (+H+) = C6H5-CH(OH)-CH(CH3)2 (Д) + Mg(OH)Cl.
2Mg+O2= MgO
MgO+ H2O= Mg(OH)2
Mg(OH)2 +2NaCl =MgCl2+ 2NaOH