Q.

Consider the following solutions: I. 1 M sucrose II. 1 M KCI III. 1 M benzoic acid in benzene IV. 1 M (NH4)3PO4 Which of the following is/are true?

Moderate

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By Expert Faculty of Sri Chaitanya

All solutions are isotonic.

III is hypotonic of I, II, and IV

I, II, and III are hypertonic of IV

IV is hypertonic of I, II, and III.

answer is 2,3,4.

(Detailed Solution Below)

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Detailed Solution

The solutions which have the same osmotic pressure are called isotonic solutions. Osmotic pressure =iCsTwhere i is the van't Hoff factor, c is the concentration of the solute and T is the temperature. In the given four solutions, 'i' is maximum for IV as it has a maximum number of ions. So IV is hypertonic with respect to others and III is hypotonic of I,II and IV

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