Question

(a) what type of deviation is shown by a mixture of ethanol and acetone? 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 molality and molarity of the solution ?
(Density of solution =1.2 `gL^(-1))`

Answer 1

(a) Ethanol and acetone shows + ve deviation beacuase both are non polar compunds and after mixing force of attraction decreases
Like particel force of attractio `gt` unike particle force of attraction
(b) Molarity `=("WB"xx1000)/("MB"xx"WA")=(10xx1000)/(180xx90)=0.617 M`
Vs =`("MS")/("ds")rarr(100)/(1.2 g//ml)`
Molarity `=("WB"xx1000)/("MB"xx"Vs")rarr(10xx1000)/(180xx100)xx1.2=0.667` m