0 0 +2
3Ba+N2=Ba3N2
0 +2
Ва - 2e →Ва | 2| | 3
0 -3 | | 6 |
N2 +3e*2 → 2N | 6| | 1
2Na+2H2O=2NaOH+H2
2NaOH+CO2=Na2CO3+H2O
Na2CO3+H2CO3=2NaHCO3
NaHCO3+NaOH=Na2CO3+H2O
2Н3РО4 + 3Са(ОН)2 = Са3(РО4)2 +
6Н2О
m(Н3РО4)=50*49/100=24,5кг
М(2Н3РО4)=196
М(Са3(РО4)2)=310
24,5/196=Х/310
Х=38,7кг
<span>Уравнение:</span>
BaCl2+MgSO4=MgCl2+BaSO4(осадок)
<span> m(BaCl2)=20.8 г</span>
<span>n(BaCl2)=m(BaCl2)/M(BaCl2)</span>
<span>n(BaCl2)=20.8/208=0.1 моль</span>
<span>n(BaCl2)/1=n(BaSO4)/1</span>
<span>=> n(BaSO4)=0.1 моль</span>
<span>m(BaSO4)=n(BaSO4)*M(BaSO4)</span>
<span>m(BaSO4)=0.1*233=</span><em><span>23.3 г</span></em>