Advertisements
Advertisements
प्रश्न
The values of Van’t Hoff factors for KCl, NaCl and K2SO4, respectively, are ______.
पर्याय
2, 2 and 2
2, 2 and 3
1, 1 and 2
1, 1 and 1
उत्तर
The values of Van’t Hoff factors for KCl, NaCl and K2SO4, respectively, are 2, 2 and 3.
Explanation:
\[\ce{KCl (K+ + Cl)}\] and \[\ce{NaCl (Na+ + Cl)}\] ionize to give 2 ions and \[\ce{K2SO4(2K+ + SO^{-}4)}\] ionizes to give 3 ions thus, van’t Hoff factors for \[\ce{KCl}\], \[\ce{NaCl}\] and \[\ce{K2SO4}\] are 2, 2 and 3 respectively.
APPEARS IN
संबंधित प्रश्न
Derive van’t Hoff general solution equation
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)
19.5 g of CH2FCOOH is dissolved in 500 g of water. The depression in the freezing point of water observed is 1.0°C. Calculate the van’t Hoff factor and dissociation constant of fluoroacetic acid.
Define the term Abnormal molar mass
Give reasons for the following
Elevation of the boiling point of 1 M KCl solution is nearly double than that of 1 M sugar solution.
The Van't Hoff factor (i) for a dilute aqueous solution of the strong elecrolyte barium hydroxide is (NEET) ______.
Phenol dimerizes in benzene having van’t Hoff factor 0.54. What is the degree of association?
Van’t Hoff factor i is given by the expression:
(i) i = `"Normal molar mass"/"Abnormal molar mass"`
(ii) i = `"Abnormal molar mass"/"Normal molar mass"`
(iii) i = `"Observed colligative property"/"Calculated colligative property"`
(iv) i = `"Calculated colligative property"/"Observed colligative property"`
Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 g L–1 at 257°C and 100 mm Hg. The molar mass of geraniol is ______ g mol–1. (Nearest Integer)
[Given: R = 0.082 L atm K–1 mol–1]