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Question
Isotonic solutions must have the same:
(i) solute
(ii) density
(iii) elevation in boiling point
(iv) depression in freezing point
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Solution
(ii) density
(iii) elevation in boiling point
Explanation:
`pi` = CRT ot `pi = n_2/V RT`
Isotonic solutions must have same osmotic pressure at a given temperature hence must have same volume and number of moles i.e., same molar concentration. Thus, the isotonic solutions have same elevation in boiling point, and depression in freezing point.
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