C2H2 + Br2 (hv)= CHBr=CHBr
CHBr=CHBr + H2 (t, Ni)= CH2Br—CH2Br
CH2Br—CH2Br + 2NaOH = 2NaBr + 2H2O + C2H2
Элемент - хлор
Строение: 1s2 2s2 2p6 3s2 3p5
20 символов минимум 20 символов минимум
<span>2NO2 + 2NaOH = NaNO2 + NaNO3 + H2O
<span>6NaOH + P2O5 = 2Na3PO4 + 3H2O
</span><span>ZnO + 2NaOH = Na2ZnO2 + H2O
<span>Cl2O7 + 2 NaOH = 2 NaClO4 + H2O
</span><span>FeO + 2NaOH = <span>Fe(OH)2</span> + <span>Na2O.
</span></span><span>a. пять
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