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Fe2(so4)3 какая это соль? основная кислая средняя или двойная

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Fe2( so4)3-это средняя соль. вот пример кислой соли: ca(hso4)2
Измайлова-Алексей

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Must Waste More Time...

ibarskova1542
Все просто) 1) ищем степень окисления металла и кислотного остатка (можно посмотреть в таблице растворимости, а можно посчитать самому) 2) ищем между ними нок 3) делим степени окисления поочерёдно на нок 4) получаем коэффициенты, которые и записываем в формулу так, kалий имеет степень окисления +1 no2 имеет степень окисления -1 нок = 1 1 : 1 = 1 ; 1 : 1 = 1 следовательно, правильная формула - kno2 (единицы не записываем) с нитритом алюминия все точно также : алюминий имеет степень окисления +3 no2 имеет степень окисления +1 нок = 3 3 : 3 = 1 ; 3 : 1 = 3 следовательно, правильная формула - al(no2)3 (формулу кислотного остатка всегда берём в скобки и коэффициент всегда ставим после них) старался объяснить максимально просто, надеюсь, что понятно)

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Fe2(so4)3 какая это соль? основная кислая средняя или двойная
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