(a) Define the following terms : (i) Ideal solution (ii) Azeotrope (iii) Osmotic pressure (b) A solution of glucose (C_(6)H_(12)O_(6)) in water is labelled as 10% by weight. What would be the molality of the solution? (Molar mass of glucose= 180 g mol^(-1))

(a) Define the following terms : (i) Ideal solution (ii) Azeotrope (i

1.	(a) Define the following terms : (i) Ideal solution (ii) Azeotrope (iii) Osmotic pressure (b) A solution of glucose (C_(6)H_(12)O_(6)) in water is labelled as 10% by weight. What would be the molality of the solution? (Molar mass of glucose= 180 g mol^(-1))
Answer» Solution :(a) (i) Ideal Solution : The solutions which OBEY raoult' s law over the entire range of concentration are known as ideal solution.eg-n-hexane and n-heptan `DeltaH(mix)=0, Delta.V (mix)=0` (ii) AZEOTROPE : These are constant boiling mhtures which dishll out unchanged in their composition eg. ethanol and water. (iii) Osmotic pressur: It is extra PRESSURE which is applied on the solution to just prevent the FLOW of solvent into the solution through a semi permeable membrane (b) 10% by weight : 10 gm of glucose in 100 gm of solution `therefore""WB=10gm, WA=90g, m ws = 100g` `MB(C_(6)H_(12)O_(6))=180 g` `"MOLALITY (m)"=(WB)/(MBxxWA(kg))=(10xx1000)/(180xx90)=0.617 m`