Предмет: Химия, автор: xaruka13553

17 баллов!
Какую массу олеума с w (SO3) 30%, надо добавить к 200 г водного раствора c w(H2SO4) 10%, чтобы получить водный раствор с w(H2SO4) 20%?​

Ответы

Автор ответа: khachatryanani01
1

Ответ: so3+h2o=h2so4

Объяснение:

So3 -30x раствор-100х

So3-0.375x мол

H2so4-20+36.75x

100x+200------100%

20+36.75x------20%

X= 1.194

Олеум-1.194*100=119

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