Question

vapour pressure of water at 20 degree celsius is 17 mm hg calculate the vapour pressure of the solution containing 2.8 grams of urea in 50 grams of water

Answer 1

Answer: 16.71

Step-by-step explanation:

given,

p1^o= 17mmHg

W1=50g

W2=2.8g

M1=18g

M2=NH2CONH2

=14+2(1)+12+16+14+2(1)

=60g

p=?

we know that,

p1^o - p W2 x M1

----------- = --------------

p1^o M2 x W1

= 17-p / 17 = 2.8 x 18/ 60 x 50

= 51000- 3000p = 856.8

= 51000- 856.8 = 3000p

= p = 16.71

Answer 2

Answer:

so, this is the answer

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