<span><span>2<span>KOH</span></span>+<span>SO2</span> → <span>K2SO3</span>+<span>H2O
</span></span><span><span>Ca<span>(OH)</span>2</span>+<span>CO2</span> → <span>CaCO3</span>+<span>H2O
</span></span><span><span>Ba<span>(OH)</span>2</span>+<span>SO2</span> → <span>BaSO3</span>+<span>H2O
</span></span><span><span>2<span>NaOH</span></span>+<span>SO3</span> → <span>H2O</span>+<span>Na2SO<span>4
</span></span></span>
K2SiO3+H2SO4=K2SO4+H2SiO3
m(K2SiO3)=80*0.0385= 3.08 г
n(K2SiO3)=m/M=3.08/ 154=0.02 моль
n(K2SiO3)/1=n(H2SiO3)/1
=>m(H2SiO3)=n*M=0.02* 78=1.56 г
2C2H2 + 5O2 = 4CO2 + 2H2O