For a solution if p°a =600 mm hg, p°b =840 mm hg under atmospheric condition and vapour pressure of solution is 1 atmosphere then find question 1 composition of solution question 2 composition of vapour in equlibrium with solution
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Expert's answer
2017-06-06T02:03:12-0400
Use the formula of Raoult’s law 760 = (600 – 840) XA + 840 240 XA = 80 XA = 80/240 = 0.3 Use formula XB = 1 - XA Plug the values we get XB= 1 − 0.4 = 0.7 Use formula PA = PoA × XA = 600 × 0.3 = 180 mmHg PB = PoB × XB = 840 × 0.7 = 588 mmHg YA = 180 /(180+ 588))= 0.23 YB = 1 − YA =1 – 0 .23 = 0.77
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Comments
See Raoult’s law, it should be 1 atmosphere pressure here
Where did 760 came from
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