What is the vapor pressure of a solution containing 2 moles of solute and 3 mole

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Question: What is the vapor pressure of a solution containing 2 moles of solute and 3 moles of solvent, assuming ideal behavior? (2022)

Options:

Correct Answer: 0.6 P0

Exam Year: 2022

Solution:

Vapor pressure of solution = (moles of solvent / total moles) * P0 = (3 / (2 + 3)) * P0 = 0.6 P0.

What is the vapor pressure of a solution containing 2 moles of solute and 3 moles of solvent, assuming ideal behavior? (2022)

What is the vapor pressure of a solution containing 2 moles of solute and 3 moles of solvent, assuming ideal behavior? (2022)

Step 1: Identify the number of moles of solute and solvent. Here, we have 2 moles of solute and 3 moles of solvent.
Step 2: Calculate the total number of moles in the solution. Total moles = moles of solute + moles of solvent = 2 + 3 = 5 moles.
Step 3: Calculate the mole fraction of the solvent. Mole fraction of solvent = moles of solvent / total moles = 3 / 5.
Step 4: Use the formula for vapor pressure of the solution. Vapor pressure of solution = (moles of solvent / total moles) * P0.
Step 5: Substitute the values into the formula. Vapor pressure of solution = (3 / 5) * P0.
Step 6: Simplify the fraction. 3 / 5 = 0.6.
Step 7: Write the final answer. Vapor pressure of solution = 0.6 P0.

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