Question bank/JEE Main/Chemistry

JEE MainChemistryModerateSurface Chemistry

The volume of colloidal particle VC as compared to the volume of
a solute particle in a true solution VS could be. Find 10^Vc/ Vs^

Show answer and solution
For true solution the diameter range is 1 to 10 and for
colloidal solution diameter range is 10 to 10,000
V0V8=(4/3)πrc3(4/3)πrs3=(rcrs)3\frac{V_{0}}{V_{8}} = \frac{(4/3)\pi r_{c}^{3}}{(4/3)\pi r_{s}^{3}} = {(\frac{r_{c}}{r_{s}})}^{3}
Ratio of diameters = (10/1)3 = 103
Vc/ Vs = 103 =0.001

Source: Grass-G / CH-15 Chemistry Paper 11 Nov..docx

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