Question

Срочно химия 8 класс

Answer 1

CuO-CuCl2-Cu(OH)2

1) CuO + 2HCl => CuCl2 + H2O

CuO + 2H+ + 2Cl- => Cu²+ + 2Cl- + H2O

CuO + 2H+ => Cu²+ + H2O

2) CuCl2 + 2NaOH => Cu(OH)2↓ + 2NaCl

Cu²+ + 2Cl- + 2Na+ + 2OH- => Cu(OH)2↓ + 2Na+ + 2Cl-

Cu²+ + 2OH => Cu(OH)2↓

1) Na2O + SO3 => Na2SO4

2) 2NaOH + H2SO4 => Na2SO4 + H2O

3) 2NaOH + SO3 => Na2SO4 + H2O