(a) What type of deviation is shown by a mixture of ethanol and acetone 7 Give reason. (b) A solution of glucose (molar mass = 180 g mol^(-1)) in water is labelled as 10% (by mass). What would be the molallty and molarity of the 90lution ? (Density of solution = 1.2 g mL^(-1).)

(a) What type of deviation is shown by a mixture of ethanol and aceton

1.	(a) What type of deviation is shown by a mixture of ethanol and acetone 7 Give reason. (b) A solution of glucose (molar mass = 180 g mol^(-1)) in water is labelled as 10% (by mass). What would be the molallty and molarity of the 90lution ? (Density of solution = 1.2 g mL^(-1).)
Answer» SOLUTION :(a) It shows positive deviation. It is due to weaker interaction between acetone and ETHANOL than ethanol-ethanol interactions. (B) Given : `W_(B) = 10 g , W_(s) = 100 g , W_(A) = 90 ` g `M_(B) = 180 g//mol & d = 1.2 `g/mL M = `(Wt % xx "DENSITY" xx 10)/("Mol.wt.")` M = `(10 xx 1.2 xx 10)/(180)` = 0.66 M or 0.66 mol/L = 0.66 M m = `(W_(B) xx 1000)/(M_(B) xx W_(A) "(in g)") ` `m = (10 xx 1000)/(180 xx 90)` = 0.61 m or 0.61 mol/kg