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MHT CET202013 Oct 2020Evening ShiftChemistryChemical Bonding and Molecular StructureActual

Which of the following has highest boiling point?

Options

  1. A1 % urea solution
  2. B1 % sucrose
  3. C1 % NaCl solution
  4. D1 % CaCl ₂ solution

Correct answer

D. 1 % CaCl ₂ solution

Step-by-step solution

The elevation in boiling point is given by T_ b =i k_ b m West, T_ B = Elevation in boiling point i= Van't Voff factor K_ b = molal boiling point constant m= molality of solution. (it is same fore all, acconding to question) Therefore, Elevation in boiling paint is directly proportional to the number of species present in the solution (van't Ueff factor) (i) 0.1 M NaCl i=2 , since NaCl is ionic and if will dessociate into Na ⁺ and Cl ⁻ in aqueals solution (ii) 0.1 M suchose it will not dissociate in aqueous solutio

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