The elevation in the boiling point of an aqueous solution of NaCl is 0 . 01 ° C . If its van't Hoff factor is 1 . 92 , the molality of NaCl solution is ___ ( K b for water = 0 . 52 K kg mol - 1 )

Question

The elevation in the boiling point of an aqueous solution of NaCl is 0 . 01 &#176; C . If its van't Hoff factor is 1 . 92 , the molality of NaCl solution is ___ ( K b for water = 0 . 52 K kg mol - 1 )

Quantrex Academy · Accepted Answer

Correct answer: A. 0 . 01 &#160; m

The elevation in boiling point is given by: &#8710; T b = i &#215; K b &#215; m m &#160; = &#160; &#8710; T b i &#215; K b m = 0 . 01 1 . 92 &#215; 0 . 52 = 0 . 1 &#160; molal

The elevation in the boiling point of an aqueous solution of NaCl is 0 . 01 ° C . If its van't Hoff factor is 1 . 92 , the molality of NaCl solution is ___ ( K b for water = 0 . 52 K kg mol - 1 )

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The elevation in the boiling point of an aqueous solution of NaCl is 0 . 01 &#176; C . If its van&#39;t Hoff factor is 1 . 92 , the molality of NaCl solution is ___ ( K b for water = 0 . 52 K kg mol - 1 )

Options

Correct answer

Step-by-step solution

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The elevation in the boiling point of an aqueous solution of NaCl is 0 . 01 ° C . If its van't Hoff factor is 1 . 92 , the molality of NaCl solution is ___ ( K b for water = 0 . 52 K kg mol - 1 )