Объяснение:
Al2(SO4)3+6NaOH=2Al(OH)3+3Na2SO4
1.
1)Na2O+2HNO3=2NaNO3+2H2O
2Na+O+2H+2NO3=2Na+2NO3+2H2O
<span>
O+2H=2H2O</span>
2)KOH +
HNO3 = KNO3 + H2O
K + OH + H
+ NO3 = K + NO3+ H2O
<span>
OH
+ H = H2O</span>
<span>3) 2HNO3+Na2CO3=2NaNO3+CO2+H2O</span>
2H+2NO3+2Na+CO3=2Na+2NO3+CO2+H2O
2H+CO3=CO2+H2O
2.
1)2P+3Ca=Ca3P2
<span>2) Ca3P2+6H2O=3Ca(OH)2+2PH3(стрелочка вверх.газ)</span>
3) 2PH3+4O2=P2O5+3H2O
4)P2O5+H2O=2HPO3
<span>5) HPO3+ <span>H2O= H3PO4</span></span>