Сокращенному ионному уравнению: 2OH- + Cu2+ = Cu(OH)2 будет соответствовать молекулярное:
1) 2NaOH + CuCl2 = Cu(OH)2 + 2NaCl
2) Cu(OH)2 +2HNO3 = Cu(NO3)2 +2H2O
3) H2SO4 + CuO = CuSO4 + H2O
4) 2Сu + O2 = 2CuO
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