CHEM 1250 Study Guide - Quiz Guide: Boiling Point, Phase Diagram, Triple Point

• School: Ohio State University
• Department: Chemistry
• Course: CHEM 1250
• Professor: All

Document Summary

1. (10 pts) draw a phase diagram for a substance with the properties listed below (letters a-d). Label the regions (phases) and and the points a-d on the diagram. Then explain what the points a-d represent (next to the letters listed below). For letter e answer the question given and give a brief explanation. Vapor pressure: 0. 1 atm at -10 c: sublimation point or p & t at which solid and gas are in equilibrium. Line ab is the vapor pressure curve for the solid. Every point on this line represents an equilibrium between solid and gas (a sublimation point). Triple point: 30 c at 0. 5 atm - 3 phases in equilibrium. In this case, all 3 states (solid, liquid and gas) exist in equilibrium (at the same time). Normal melting point: 10 c - m. p. at 1 atm. The temperature at which the solid and liquid are in equilibrium at 1 atm.