Question

Uma mistura binária de acetona e clorofórmio está em equilíbrio com sua fase a vapor na temperatura de 50 °C e a pressão total do sistema é de 0,75 atm.

Considerando-se que sejam válidas as Leis de Raoult e de Dalton para esse sistema e que as pressões a vapor dos componentes a 50 °C sejam de 0,81 atm e 0,69 atm para a acetona e o clorofórmio, respectivamente, marque a alternativa que apresenta a composição na fase líquida, sendo yA = fração molar da acetona e yC = fração molar do clorofórmio.

Escolha uma:
a.
yA = 0,4 e yC = 0,6.

b.
yA = 1,25 e yC = 0,75.

c.
yA = 0,5 e yC = 0,5.

d.
yA = 1,08 e yC = 0,92.

e.
yA = 0,75 e yC = 0,25.

Answer 1

Resposta:

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Explicação:“Swimming is an amazing exercise. It’s healthy, fun, relaxing and a low-impact sport. I know this from personal experience. Last year while I was jogging I injured my left knee. I don’t go jogging anymore, now I’m considering joining a swimming competition.”“Swimming is an amazing exercise. It’s healthy, fun, relaxing and a low-impact sport. I know this from personal experience. Last year while I was jogging I injured my left knee. I don’t go jogging anymore, now I’m considering joining a swimming competition.”

Answer 2

Resposta:d. yA = 1,08 e yC = 0,92.

Explicação:

P=0,75 atm,P1=0,81 atm,P2=0,69 atm,y1=?,y2=?

P1=P.y1                    P2=P.y2

0,81=0,75.y1           0,69=0,75.y2

y1=0,81/0,75           y2=0,69/0,75

y1=1,08                    y2=0,92