Question 15
The values of van't Hoff factors for KCL, NaCl and $K_{2} S O_{4}$ respectively are ........ .
(a) 2, 2 and 2 (b) 2, 2 and 3 (c) 1, 1 and 2 (d) 1, 1 and 1

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Solution

(b) Number of total ions present in the solution is known as van't Hoff factors (I).
$\begin{matrix} S u b s t a n c e s & v a n^{'} t H o f f f a c t o r (i) F o r K C L & 2 F o r N a C l & 2 F o r K_{2} S O_{4} & 3 \end{matrix}$
Hence, correct choice is (b).

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