Which of the following aqueous solutions

Question:

Which of the following aqueous solutions should have the highest boiling point?

(i) 1.0 M NaOH

(ii) 1.0 M Na2SO4

(iii) 1.0 M NH4NO3

(iv) 1.0 M KNO3

Solution:

Option (ii) 1.0 M Na2SO4 is the answer.

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