What is the van't hoff factor for potassium sulphate in very dilute aqueous solution

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Solution

The dilute solution of K2SO4 dissociates into 2K+ and SO42-. Thus Vant Hoff factor is approximately 3. But in actual situation this value is less than 3 because in dilute solution salts do not ionize completely.
approximate value for a very dilute solution is 3

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