Ncert Exercises & Solutions

Three aqueous solutions of NaCl are 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 of -

1. i_A < i_B < i_C

2. i_A > i_B > i_C

3. i_A = i_B = i_C

4. i_A < i_B > i_C

Hint: The value of i didnot depend on the concentration of the solution.

The NaCl is a strong electrolyte and disssociate fully. The value of α for NaCl is almost equal to 1.
but on different dilution they have slightly different value,which has been given in NCERT in a table.

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