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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
29 Nov 2021

Given information

A solution contains  of an unknown compound dissolved in  of water. (Assume a density of  for water.) The freezing point of the solution is . The mass percent composition of the compound is  and ; the rest is .

 

Step-by-step explanation

Step 1.

The mass of water for the given solution is calculated by:

 

The equation can be further rewritten as,

Putting the values,

 

To convert mass from into ,

 

   

Depression in freezing point of water is calculated by,

 

Rearranging the equation,

   

Where,

  • is the depression in freezing point.

  • is the normal freezing point of water.

  • is the freezing point of the solution.

Putting the values,

 

 

 

 

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