मराठी

The values of Van’t Hoff factors for KCl, NaCl and K2SO4, respectively, are ______. - Chemistry

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

MCQ
रिकाम्या जागा भरा

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.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Solutions - Exercises [पृष्ठ १९]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 2 Solutions
Exercises | Q I. 15. | पृष्ठ १९

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

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]


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×