What is the osmotic pressure of a .333M solution of C9H12O6 at 25 Celsius?
What is the freezing point of a 1.77m solution of CBr4 in C6H6?
What is the boiling point of a 2.50m solution of C6H4Cl2 (non volatile)in CCl4?
A solution of C2H2O4(non volatile) in C2H5OH has a boiling point of 80.38C. What is the morality of solution?
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Expert's answer
2020-11-23T06:59:28-0500
A) Using osmotic pressure formula ,n=inRT/V=iMRTFor molarity M=1000+m×Mw1000m×dputting the values =(1000×1.25×342) (1000×1.25×1.34)=1.733MHence,n=iMRTn=28.6atm (For:i=1)
B) The osmotic pressure of same solution is 0.474 atm ΔTf=5.5−5.4=0.1oC π=CMST(C+M=molarity) ΔTf=Cm×Kf(Cm=molality)for dilute solutions CM=Cm ∴π=Kf ΔTf×ST=4.9 0.1×0.0821×283=0.474atm
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