Question

What is van't hoff factor for potassium sulfate in very dilute aqueous solution?

Answer 1

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.

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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Answer 2

Van't hoff factor for potassium sulfate in very dilute aqueous solution is 3.

Explanation:

Vant hoff factor is the ratio of number of particles after association to the number of particles before association.

$i=\frac{\text {observed colligative property}}{\text {Calculated Colligative property}}$

$K_2SO_4\rightarrow K^++SO_4^{2-}$

Before dissociation: number of moles = 1

After dissociation : number of moles = 3

$i=\frac{3}{1}=3$

Thus Van't hoff factor for potassium sulfate in very dilute aqueous solution is 3

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