Solution Found!
Solved: How many grams of urea [(NH2)2CO] must be added to
Chapter 12, Problem 54P(choose chapter or problem)
How many grams of urea [\(\left(\mathrm{NH}_{2}\right)_{2} \mathrm{CO}\)] must be added to 450 g of water to give a solution with a vapor pressure 2.50 mmHg less than that of pure water at 30°C? (The vapor pressure of water at 30°C is 31.8 mmHg.)
Questions & Answers
QUESTION:
How many grams of urea [\(\left(\mathrm{NH}_{2}\right)_{2} \mathrm{CO}\)] must be added to 450 g of water to give a solution with a vapor pressure 2.50 mmHg less than that of pure water at 30°C? (The vapor pressure of water at 30°C is 31.8 mmHg.)
ANSWER:Step 1 of 3
The vapor pressure of the solvent over a solution is given by the product of the vapor pressure of the pure solvent and the mole fraction of the solvent in the solution is stated by Raoult's law.
where 
