We are asked to **calculate the vapor pressure** for the** second solution at 20 ^{o}C. **

Recall :

$\overline{){{\mathbf{P}}}_{{\mathbf{solution}}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}{{\mathbf{X}}}_{{\mathbf{solvent}}}{{{\mathbf{P}}}^{{\mathbf{o}}}}_{{\mathbf{Solvent}}}}$

**We go through the following steps to solve the problem:**

**Step 1. **Calculate the moles water

**Step 2.** Calculate the moles of sucrose (C_{12} H_{22} O_{11} )

**Step 3.** Calculate the mole fraction of water

**Step 4. **Calculate the vapor pressure of the solution

Consider two solutions, one formed by adding 10 g of glucose (C_{6} H_{12} O_{6} ) to 1 L of water and the other formed by adding 10 g of sucrose (C_{12} H_{22} O_{11} ) to 1 L of water.

Calculate the vapor pressure for the second solution at 20 ^{o}C. (The vapor pressure of pure
water at this temperature is 17.5 torr.)

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Colligative Properties concept. You can view video lessons to learn The Colligative Properties. Or if you need more The Colligative Properties practice, you can also practice The Colligative Properties practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Kizilkaya's class at LSU.