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Standard XII

Chemistry

Van't Hoff Factor

Assuming 100

Question

Assuming 100% ionisation, van't Hoff factor for $K C l (a q)$ and $K_{2} S O_{4} (a q)$ respectively is:

1,1

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2,3

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2,2

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3,2

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Solution

The correct option is B 2,3
$van't Hoff factor (i) = \frac{Number of molecules (actual)}{Number of molecules (expected)}$

For $K C l$ :
$K C l (a q .) \to 1 K^{+} + 1 C l^{-}$
$i = 2$

$K_{2} S O_{4} (a q .) \to 2 K^{+} + 1 S O_{4}^{2 -}$
$i = 3$

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Question 15
The values of van't Hoff factors for KCL, NaCl and $K_{2} S O_{4}$ respectively are ........ .
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Van't Hoff Factor

Standard XII Chemistry

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Assuming 100% ionisation, van't Hoff factor for KCl (aq) and K2SO4 (aq) respectively is:

The correct option is B 2,3van't Hoff factor (i)=Number of molecules (actual)Number of molecules (expected) For KCl: KCl (aq.)→1 K++1 Cl− i=2 K2SO4 (aq.)→2K++1 SO2−4 i=3

Assuming 100% ionisation, van't Hoff factor for $K C l (a q)$ and $K_{2} S O_{4} (a q)$ respectively is:

The correct option is B 2,3
$van't Hoff factor (i) = \frac{Number of molecules (actual)}{Number of molecules (expected)}$

For $K C l$ :
$K C l (a q .) \to 1 K^{+} + 1 C l^{-}$
$i = 2$

$K_{2} S O_{4} (a q .) \to 2 K^{+} + 1 S O_{4}^{2 -}$
$i = 3$