Предмет: Химия, автор: JoahBAidens

Визначте масу розчину етанолу з масовою часткою спирту 5,6%,
який можна одержати із 720 глюкози.

Ответы

Автор ответа: drainer1
1

Дано:

m(C6H12O6) = 720 g

W(C2H5OH) = 5.6%

Знайти:

m(р-ну C2H5OH) - ?
--------------------------------

n(C6H12O6) = 720 g / 180 g / mol = 4 mol

C6H12O6 (бродіння) -> 2C2H5OH + 2CO2

За РХР: n(C6H12O6) = 2n(C2H5OH) , тому:

n(C2H5OH) = 4 mol * 2 = 8 mol ;

m(C2H5OH) = 8 mol * 46 g / mol = 368 g

m(р-ну C2H5OH) = 368 g / 0.056 = 6571.428 g = 6571 g

Ответ: 6571 g .

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