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The vapor pressure of ethanol (CH3CH2OH) is 54.7 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 231 g of ethanol and 0.190mol of a nonvolatile nonelectrolyte? Answer:VP(solution) =  _____mm Hg

Question

The vapor pressure of ethanol (CH3CH2OH) is 54.7 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 231 g of ethanol and 0.190mol of a nonvolatile nonelectrolyte? 
Answer:
VP(solution) =  _____mm Hg

check_circleAnswer
Step 1

Given,

 

Molar mass of ethanol is 46 g...

Vapour pressure is calculated as follows
P -P
A=X.
PA
Here
B
P-Vapour pressure of solvent
PA-Vapour pressure of solution
Mole fraction is given below
Mole fraction=
n n
nmoles of solute
nmolesof solvent
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Vapour pressure is calculated as follows P -P A=X. PA Here B P-Vapour pressure of solvent PA-Vapour pressure of solution Mole fraction is given below Mole fraction= n n nmoles of solute nmolesof solvent

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