Advertisements
Advertisements
Question
The freezing point depression constant for water is 1.86° K Kg mol-1. If 5 g Na2SO4 is dissolved in 45 g water, the depression in freezing point is 3.64°C. The Vant Hoff factor for Na2SO4 is ______.
Options
2.57
2.63
3.64
5.50
Advertisements
Solution
The freezing point depression constant for water is 1.86° K Kg mol-1. If 5 g Na2SO4 is dissolved in 45 g water, the depression in freezing point is 3.64°C. The Vant Hoff factor for Na2SO4 is 2.57.
APPEARS IN
RELATED QUESTIONS
Define van’t Hoff factor.
3.9 g of benzoic acid dissolved in 49 g of benzene shows a depression in freezing point of 1.62 K. Calculate the van't Hoff factor and predict the nature of solute (associated or dissociated).
(Given : Molar mass of benzoic acid = 122 g mol−1, Kf for benzene = 4.9 K kg mol−1)
Calculate the amount of benzoic acid (C6H5COOH) required for preparing 250 mL of 0.15 M solution in methanol.
Define the term Abnormal molar mass
Predict whether van’t Hoff factor, (i) is less than one or greater than one in the following:
CH3COOH dissolved in water
The Van't Hoff factor (i) for a dilute aqueous solution of the strong elecrolyte barium hydroxide is (NEET) ______.
The van’t Hoff factor (i) accounts for ____________.
The values of Van’t Hoff factors for KCl, NaCl and K2SO4, respectively, are ______.
What is the expected each water van't Hoff factor for and K4[F4(CN6)] when it completely dissociated in waters.
Why is the value of van't Hoff factor for ethanoic acid in benzene close to 0.5?
