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

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a
1.0 M NaOH
b
1.0 M Na2SO4
c
1.0 M NH4NO3
d
1.0 M KNO3

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detailed solution

Correct option is B

As we know greater the value of van't Hoff factor, higher will be the elevation in boiling point and hence, higher will be the boiling point of solution.Hence, 1.0 M Na2SO4 has highest value of boiling point.

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