1.

Calculate the mass ascorbic acid (Vitamin C, C_6H_8O_6) to be dissolved in 75g of acetic acid to lower its melting point by 1.5^@c.Kf =3.9 K kg/ mol

Answer»

Solution :Molar MASS of `C_6H_8O_6` (absorbic ACID) = `176g mol^(-1)`
`Delta T_f =1.5^@ W_2` (mass of solute) = `(Delta T_bM_2W_1)/(1000K_f) (1.5xx176xx75)/(1000xx3.9)=5.08`


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