<span>C2H5OH + CuO = CH3COH + Cu + H2O</span>
<span><span>CH3COH + Ag2O =CH3COOH + 2Ag</span></span>
<span><span><span>CH3COOH +C2H5OH = CH3COOC2H5 + H2O</span></span></span>
<span><span><span><span>3C2H2 = C6H6</span></span></span></span>
<span><span><span><span><span>C6H6 + Br2 = C6H5Br + HBr</span></span></span></span></span>
<span><span><span><span><span><span>C6H5Br + KOH = C6H5OH + KBr</span></span></span></span></span></span>
1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^7
CaO+SO3=>CaSO4
1)n(CaSO4)=m(CaSO4)/MM(CaSO4)=20/136=0.147
2)n(CaO)=(CaSO4)=0.147
3)m(CaO)=n(CaO)*MM(CaO)=0.147*56=8.232
Степени окисления
-3 +1 +5 -2
N H4 N O 3