Question

What is the vapor pressure at 20 degrees C of an ideal solution prepared by the addition of 3.72g of nonvolatile solute urea, CO(NH2)2, to 50.0g of methanol, CH3OH? The vapor pressure of pure methanol at 20 degrees C is 89.0 mmHG. A) 82.8 mmHg B) 85.6 mmHg C) 3.39 mmHg D) 78.1 mmHg E) 10.8 mmHg

Name: what is the vapor pressure at 20 degrees c of an ideal solution prepared by the addition of 372g of nonvolatile solute urea conh22 to 500g of methanol ch3oh the vapor pressure of pure methan 65191
Uploaded: 2022-03-17T08:49:35-08:00
Channel: Priyan S
Description: what is the vapor pressure at 20 degrees c of an ideal solution prepared by the addition of 372g of nonvolatile solute urea conh22 to 500g of methanol ch3oh the vapor pressure of pure methan 65191

          What is the vapor pressure at 20 degrees C of an ideal solution
prepared by the addition of 3.72g of nonvolatile solute urea,
CO(NH2)2, to 50.0g of methanol, CH3OH? The vapor pressure of pure
methanol at 20 degrees C is 89.0 mmHG.
A) 82.8 mmHg
B) 85.6 mmHg
C) 3.39 mmHg
D) 78.1 mmHg
E) 10.8 mmHg

Added by Mary T.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Priyan S

03/17/2022

Step 1

- Calculate the moles of urea: moles = mass / molar mass moles = 3.72g / 60.06 g/mol = 0.0619 mol - Calculate the moles of methanol: moles = mass / molar mass moles = 50.0g / 32.04 g/mol = 1.561 mol - Calculate the total moles of solute and solvent: Show more…

Show all steps

Thanks for your feedback!

What is the vapor pressure at 20 degrees C of an ideal solution prepared by the addition of 3.72g of nonvolatile solute urea, CO(NH2)2, to 50.0g of methanol, CH3OH? The vapor pressure of pure methanol at 20 degrees C is 89.0 mmHG. A) 82.8 mmHg B) 85.6 mmHg C) 3.39 mmHg D) 78.1 mmHg E) 10.8 mmHg