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Under what condition Van't Hoff factor ...

Under what condition Van't Hoff factor
(i) is
(a) equal to unity, (b) less than 1, and c greater than 1.
Explain your answer.

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Solute behaves as non - electrolyte and does not undergo association or dissociation.
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MODERN PUBLICATION-SOLUTIONS-REVISION EXERCISES (VERY SHORT ANSWER QUESTIONS)
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  10. Under what condition Van't Hoff factor (i) is (a) equal to unity, ...

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  11. (a) Define Kohlraush’s law.

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