a)ZnSO4+2KOH=Zn(OH)2<span>↓+K2SO4</span>
<span> Zn 2+ + SO4 2- + 2K+ + 2OH - =Zn(OH)2+ 2K+ + SO4 2-</span>
<span> Zn 2+ + 2OH- =Zn(OH)2</span>
<span>b)Na2CO3+2HNO3=2NaNO3+H2O+CO2</span>
<span> 2Na+ CO3 2- + 2H+ + 2NO3- =2Na+ + 2NO3- + H2O+CO2</span>
<span> 2H+ + CO3 2- =H2O+CO2</span>
<span>c)CuO+2HClO4=Cu(ClO4)2+H2O</span>
CH3COOH+CH3OH=CH3COOCH3+H2O
n(CH3OH)=90/32=2,815 моль
n(CH3OH)=n(CH3COOCH3)
m(CH3COOCH3)=2,815*74=208,31 г
1.гомологи
2. <span>ацетата натрия со щелочью</span>