Ni(NO3)2+NaOH=? чему ровна?
Ni(NO3)2 + 2NaOH = Ni(OH)2 + 2NaNO3 Ni(2+) + 2OH(-) = Ni(OH)2
Ni(NO₃)₂ + 2NaOH = Ni(OH)₂ + 2NaNO₃ Ni²⁺ + 2OH⁻ = Ni(OH)₂