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Two liquid p and q form an ideal solution at 300k the vapour pressure of a solution of 1mole of p and x mole of q is 550mm.if vapour pressure of pure p and q is 400mm and 600mm respectively then x is

Ananya , 7 Years ago
Grade 12
anser 1 Answers
Vikas TU

Last Activity: 7 Years ago

Since P=xAP0A+xBP0B 
⇒(11+3) 
P0A+(31+3)P∘B 
=550mm Hg 
⇒(11+4) 
P0A+(41+4)P∘B 
=560mm Hg 
That is, 
0.25P0A+0.75P0B 
=550mm Hg 
0.20P0A+0.8P0B 
=560mm Hg 
Unraveling for P0A 
furthermore, P0B we get, 
P0A=400 mm Hg 
P0B=600 mm Hg 
 
 

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