2+ - + - 2+ - + - 1)FeCI2+NaOH=FeOH+NaCI
2+ - + 2- 2+ 2- + -
2)FeCI2+Na2Co3=FeCo3↓+NaCI
2+ - + 2- 2+ 2- + -
2Fe+CI+2Na+Co3=FeCo3↓+Na+CI
2+ - 2+ -
2Fe+Co3=FeCo3↓
2+ - +2 - 2+ 2- + -
3)FeCI2+H2S=FeS+2HCI
Помогите расставить коэффициент! Заранее Спасибо)))
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