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Entropy for a Reversible Process

12.2 g of ben...

Question

12.2 g of benzoic acid $(M = 122 g m o l^{- 1})$ in 100 g water has an elevation in boiling point of 0.27. $K_{b} = 0.54 K k g m o l^{- 1} .$ If polymerisation is a 100 % complete, the number of molecules of benzoic acid in an associated state is:

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Solution

$△ T_{b} = K_{b} \times i \times m$ $\Rightarrow 0.27 = 0.54 \times i \times \frac{12.2}{122 \times 100} \times 1000$ $\Rightarrow i = 1 / 2$

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