Предмет: Химия, автор: akmaralzam2004

СРОЧНОО ПОМОГИТЕЕ УМОЛЯЮ ДАМ 40 БАЛЛОВ

Дано:

m(KCl)-2,50г

Найти m(AlCl3)-?

в результате взаимодействующей реакции с хлоридом алюминия и едким калием образовано 2,50 г хлорид калия.Определите массу израсходованного хлорид алюминия.

Приложения:

Ответы

Автор ответа: ldglkva
2

AlCl3 + 3KOH = Al(OH)3 + 3KCl

M(AlCl3) = 27+35*3 = 132 г/моль

M(3KCl) = 3*(39+35) = 222 г/моль

(132 г/моль AlCl3 )/( x г AlCl3) = (222 г/моль KCl)/(2,5 г KCl)

x = (132г/моль*2,5 г)/222 г/моль = 1,49 г.

Израсходовано 1,49 г хлорида алюминия

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