<span>FeCl2 + 2 KOH </span>→<span> Fe(OH)2 + 2 KCl
</span><span>AgNO3 + KCl </span>→<span> AgCl + KNO<span>3
</span></span><span>Zn(NO3)2 + 2 NaOH </span>→<span> 2 NaNO3 + Zn(OH)<span>2
</span></span><span>BaCO3 </span>→<span> BaO + CO<span>2
</span></span>Fe + CuCl2 → Cu + FeCl2
<span>Na2SiO3 + 2HCl → SiO2 + 2NaCl + H2O</span>
...............................................
N(Na2CO3)=500мл*0.1М/1000мл=0...моль
<span>m(Na2CO3)=0.моль*106г/моль=..г</span>
w(NaCl)=m(NaCl)*100%/m(NaOHр-р)+m(AlCl3р-р)-m(Al(OH)3)=11700/591,33=19,79%
HNO3+NaOH=NaNO3+H20
H+NO3+Na+OH=Na+NO3+H2O
H+OH=H2O
3NaOH+Al=Al(OH)3↓+3Na
3Na+3OH+Al=Al(OH)3↓+3Na
3OH+Al=Al(OH)3↓