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Сколько молей едкого калия КОН необходимо для полной нейтрализации 4,9 г фосфорной кислоты
Ответы 1
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Полная нейтрализация происходит когда фосфорная кислота прореагирует с избытком гидроксида калия, при этом образуется средняя соль – фосфат калия. Составляем уравнение реакции и производим рассчет: 4,9 г Х моль H₃PO₄ + 3KOH → K₃PO₄ + 3H₂O 98 г 3 моль Отсюда, Х = 0,15 моль КОН.
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Автор:
bridger - 5 лет назад
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Автор:
prietoj4ud - 5 лет назад
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