A) \[\frac{{{V}_{c}}}{{{V}_{s}}}\approx 1\]
B) \[\frac{{{V}_{c}}}{{{V}_{s}}}\approx 1\]
C) \[\frac{{{V}_{c}}}{{{V}_{s}}}\approx {{10}^{-13}}\]
D) \[\frac{{{V}_{c}}}{{{V}_{s}}}\approx {{10}^{3}}\]
Correct Answer: D
Solution :
Size of colloidal particle?s = 1 to 100 nm (say 10 nm) \[{{V}_{c}}=\frac{4}{3}\pi {{r}^{3}}=\frac{4}{3}\pi {{(10)}^{3}}\] Size of true solution particles \[\approx 1\text{nm}\] \[{{V}_{S}}=\frac{4}{3}\pi {{(1)}^{3}}\]Thus, \[\frac{{{V}_{c}}}{{{V}_{s}}}=\frac{{{10}^{3}}}{1}\]
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