# Problem: Naphthalene, (C10H8) is the main ingredient in traditional mothballs. Its normal melting point is 81˚C, its normal boiling point is 218˚C, and its triple point is 80˚C at 1000 Pa.Using the data, construct a phase diagram for naphthalene, labeling all the regions.

###### FREE Expert Solution

Recall that a phase diagram shows the transition of matter between solid, liquid, and gas phases as temperature and pressure changes.

In a phase diagram, the different phases can be identified by their location:

• Solid: can be found at high pressure and low temperature

• Liquid: can be found between the solid and gas regions

• Gas: can be found at low pressure and high temperature

• normal melting point is the temperature at which a solid changes into a liquid at 1 atm (101.325 kPa)
•  point wherein line between the solid and liquid phase meets
• normal boiling point is the temperature at which a liquid changes into a gas at 1 atm ((101.325 kPa)
•  point wherein line between the liquid and gas phase meets
• triple point - all three phases are in equilibrium (S, L, G lines meet)
• 1000 Pa = 1 kPa
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###### Problem Details

Naphthalene, (C10H8) is the main ingredient in traditional mothballs. Its normal melting point is 81˚C, its normal boiling point is 218˚C, and its triple point is 80˚C at 1000 Pa.

Using the data, construct a phase diagram for naphthalene, labeling all the regions.