Estimate the electrical double layer thickness κ-1 for an aqueous slurry of 20 nm diameter Al2O3 particles deflocculated with 0.001 M HCl at 20°C. Compare your answer to the size of a water molecule which is approximately 0.2 nm. Do the same for 0.01 and 0.1 M HCl. Refer to the solution of Example 10.2 shown below. Explain your solution and the implication of the results.
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