C₂H₅OH + HCl ⇌ C₂H₅Cl + H₂O
Правильные утверждения: 2, 3, 4, 5, 7, 10, 12, 13, 14
Al4C3+12H2O=3CH4+4Al(OH)3
CH3COONa+NaOH=CH4+Na2CO3
1)<span> Mg + H2SO4= MgSO4 +H2
</span>2Мg<span> + </span>CO2<span> = </span>C<span> + 2</span><span>MgO
</span>Mg + 2HCl = MgCl₂ + H₂
3) CaO+H2O=Ca(OH)2
M(CaO)=56 г/моль
ню(CaO)=ню(Сa(OH)2)=5,6/56=0,1 моль
2Cr(NO3)3+3NaViO3+6HNO3=>H2Cr2O7+3Vi(No3)3+3NaNO3+2H2O
2Cr^{+3}-6e = 2Cr{+6} |1
Vi^{+5}+2e = Vi{+3} |3