Q.

The unit of ebullioscopic constant is____

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a

mol1kgK1or  K1(molality)

b

K   kgmol1  or  K(molality)1

c

kgmol1K1or  K1(molality)1

d

K  mol  kg1or  K(molality)

answer is A.

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Detailed Solution

  • The ebullioscopic constant is also called the molal elevation constant.
  • It is defined as the elevation in boiling point when one mole of non-volatile solute is added to one kilogram of solvent.
  • It is denoted by Kb.
  • The unit of an ebullioscopic constant is K Kg mol-1.
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