Which one of the following aqueous solutions will exhibit highest boiling point?

0.01 M Na₂SO₄

0.015 M glucose

0.015 M urea

0.01 M KNO₃

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Solution

0.01 M Na₂SO₄

Boiling space point space equals space straight T subscript straight o space left parenthesis solvent right parenthesis space plus increment straight T subscript straight b space left parenthesis Elevation space in space bp right parenthesis increment straight T subscript straight b space equals space miK subscript straight b where space straight m space is space the space molality space straight i space equals space van apostrophe straight t space Hoff space factor space equals space left square bracket 1 plus space left parenthesis straight y minus 1 right parenthesis straight x right square bracket straight K subscript straight b space molal space elevation space constant thus space increment straight T subscript straight b space proportional to space straight i

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