We have three aqueous solutions of NaCl labelled as 'A', 'B' and 'C' with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van't Hoff factor for these solutions will be in the order _____.

i_{A} < i_{B} < i_{C}

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i_{A} > i_{B} > i_{C}

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i_{A} = i_{B} = i_{C}

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i_{A} < i_{B} > i_{C}

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Solution

The correct option is B $i_{A} < i_{B} < i_{C}$
As NaCI is a strong electrolyte, it undergoes dissociation completely. Thus, van't Hoff factor will be same for all these solutions, $i_{A} = i_{B} = i_{C}$

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Question 20
We have three aqueous solutions of NaCl labelled as 'A', 'B' and 'C' with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van't Hoff factor for these solutions will be in the order ........... .
(a) $i_{A} < i_{B} < i_{C}$ (b) $i_{A} > i_{B} > i_{C}$ (c) $i_{A} = i_{B} = i_{C}$ (d) $i_{A} < i_{B} > i_{C}$