# What type of phase diagram should I draw if more than one pure component present?

##### 1 Answer

#### Answer:

If there are only 2 components, draw the phase diagram of binary solutions. A 2D plot requires some variables to be held constant.

#### Explanation:

Recall the Phase Rule:

#F = C - P + 2#

If the binary system (**pressure**, **temperature** and the **mole fraction of either component**, are needed to describe the system.

In order to plot a 2D phase diagram, either

Two types of phase diagrams are commonly used: the **pressure–composition phase diagrams** and the **temperature–composition phase diagrams**.

Below is a pressure-composition phase diagram of an ideal solution with 2 components, A and B.