Осуществите следующие превращения: а) Сu -> СuО -> CuS04 -> Сu(он)2 -> СuО -> Сu б) P -> Р205 -> Н3Р04 -> Са3(Р04)2 в) Li -> Li20 -> LiOH -> Li2S04
a) 2CuO" alt="2Cu + O2 ----> 2CuO" align="absmiddle" class="latex-formula"> CuSO4" alt="CuO + SO3 ----> CuSO4" align="absmiddle" class="latex-formula"> K2SO4 + Cu(OH)2" alt="CuSO4 + 2KOH ----> K2SO4 + Cu(OH)2" align="absmiddle" class="latex-formula"> CuO + H2O" alt="Cu(OH)2 ----> CuO + H2O" align="absmiddle" class="latex-formula"> 2Cu + O2" alt="2CuO ----> 2Cu + O2" align="absmiddle" class="latex-formula"> б) P2O5" alt="4P + 5O2 ----> P2O5" align="absmiddle" class="latex-formula"> 2H3PO4" alt="P2O5 + 3H2O ----> 2H3PO4" align="absmiddle" class="latex-formula"> 2Ca3PO4 + 3H2" alt="2H3PO4 + 6Ca -----> 2Ca3PO4 + 3H2" align="absmiddle" class="latex-formula"> в) Li2O" alt="2Li + O2 ---> Li2O" align="absmiddle" class="latex-formula"> 2LiOH" alt="Li2O + H2O ----> 2LiOH" align="absmiddle" class="latex-formula"> Li2SO4 + 2H2O" alt="2LiOH + H2SO4 ---> Li2SO4 + 2H2O" align="absmiddle" class="latex-formula">
2Cu+O2= 2CuO
CuO+H2SO4=CuSO4+H2O
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2=CuO+H2O
CuO+H2=Cu+H2O
4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
2H3PO4+3CaO=Ca3(PO4)2+3H2O
4Li+O2=2Li2O
Li2O+H2O=2LiOH
2LiOH+H2SO4=Li2SO4+2H2O