H2SO4 + 2KOH→K2SO4 + 2H2O
2H^+ + SO4^2- + 2K^+ + OH^-→2K^+ + SO4^2- + 2H2O
2H^+ + 2OH^-→2H2O
H^+ + OH^-→H2O
<span>1)2Ca3(PO4)2+10C+6SiO2--t--->6CaSiO3+P4+10CO;
2)4P+5O2--t--->2P2O5;
3)P2O5+6NaOH---->2Na3PO4+3H2O;
4)2Na3PO4+3MgSO4----->Mg3(PO4)2+3Na2SO4;
</span>
N(h2o)=1.6/16=0.1 моль
m(nacl)=0.1 * 58.5= 5.85 г