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  • A solution of sodium sulfate contains 92g of Na^{+} ions per kilogram of water. The molality of Na^{+} ions in that solution in mol Kg-1 is?

A solution of sodium sulfate contains 92g of Na^{+} ions per kilogram of water. The molality of Na^{+} ions in that solution in mol Kg-1 is?

Answers (1)

Here molecular weight ofNa is

23 \mathrm{g} / \mathrm{mol}$ \\ $\mathrm{n}_{\mathrm{Na}^{+}}=\frac{92}{23}=4$
Molality is a number of moles of solute present in per $\mathrm{Kg}$  of solvent.
So, molality = 4  molal

Posted by

Satyajeet Kumar

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