1) 2Cu + O2 = 2CuO
CuO + 2HCl = CuCl2 + H2O
CuCl2 + NaOH = Cu(OH)2 + NaCl
Cu(OH)2 = CuO + H2O
CuO + H2SO4 = CuSO4 +H2O
2) AlCl3 + 3NaOH = Al(OH)3 + 3NaCl
2Al(OH)3 = Al2O3 + 3H2O
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6KOH = 2<span>Al(OH)3 + 3K2SO4
</span>Al(OH)3 + HCl = <span>Al(OH2)Cl + H2O</span>
2CH4 -> CH=-CH + 3H3 (t)
CH=-CH + H2O -> CH3COH ( t, Hg)
11)mAgNO3=250*1,91=5478,75*0,6. =287,25 2)287,25/0,04=7181,25масса нового раствора3)7181/1,033=6951,8млводы добавить 4)6951,8-250=6701,8млН2О,6,7л
2NaOH + BaCl2 -> Ba(OH)2 + 2NaCl
2Na(+) + 2OH(-) + Ba(+2) + 2Cl(-) -> Ba(+2) + 2OH(-) + 2Na(+) + 2Cl(-)
реакция не идёт