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9.537 g of a non-volatile solute is dissolved in 220.0 g of water.   The solute does not...

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Chemistry

9.537 g of a non-volatile solute is dissolved in 220.0 g ofwater.  
The solute does not react with water nor dissociate insolution.  
Assume that the resulting solution displays ideal Raoult's lawbehaviour.  
At 25°C the vapour pressure of the solution is 23.498torr.  
The vapour pressure of pure water at 25°C is 23.756torr.  
Calculate the molar mass of the solute (g/mol).

71.1 g/mol

Now suppose, instead, that 9.537 g of a volatilesolute is dissolved in 220.0 g of water.  
This solute also does not react with water nor dissociate insolution.  
The pure solute displays, at 25°C, a vapour pressure of 2.376torr.  
Again, assume an ideal solution.  
If, at 25°C the vapour pressure of this solution is also 23.498torr.  
Calculate the molar mass of this volatile solute.

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