Qstnid -B-26-if The Density Of Some Lake Water Is 1.25 G Ml<sup>-1</sup> And Contains 92 G Of Na<sup>+</sup> Ions Per Kg Of Water, Calculate The Molality Of Na<sup>+</sup> Ions In The Lake. - 02: Solutions - Neet-xii-chemistry

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NEET-XII-Chemistry

02: Solutions

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#26
If
the density of some lake water is 1.25 g mL^-1 and contains 92 g of Na⁺ ions per kg of water, calculate the molality of Na⁺ ions in the lake.
Ans : Number of moles present
in 92 g of Na⁺ ions =
= 4 mol
Therefore, molality of
Na⁺ ions in the lake
= 4 m