<span>SO3+2KOH=K2SO4+H2O гидроксид калия
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Mr(Cl2O7)=35.5*2+16*7=71+112=183
Li2CO3 + H2SO4 = Li2SO4+H2O+CO2↑
Pt+H2SO4≠
Fe2O3+3H2SO4=Fe2(SO4)3+3H2O
SiO2+H2SO4 ≠
2NaOH+H2SO4=Na2SO4+2H2O
SrCl2(тв.)+H2SO4(конц.) = SrSO4+2HCl↑
Zn+H2SO4 = ZnSO4+H2↑
2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O
CH3-CH=CH-CH3 + Cl2 = CH3-CH(Cl)-CH(Cl)-CH3