1) <span>NaCl = Na(1+) + Cl(1-)</span>
<span>CuSO4 = Cu(2+) + SO4(2-)</span>
<span>K2CO3 = <span>2K(1+) +CO3(2-)</span></span>
<span><span>HNO3 = <span>Н(+) + NO3(-)</span></span></span>
<span><span><span>2) Оксид натрия Na2O (основный)</span></span></span>
<span><span><span>Na2O + CO2 = <span>Na2CO3</span></span></span></span>
<span><span><span>2Na2O + 2HCL = 2NaCl + H2O</span></span></span>
<span><span><span>Na2O + H2O </span></span></span>= 2NaOH
Na2O + H2SO4 = Na2SO4 + H2O
3) <span>K=64%, C=9.8%, O=26%</span>