Open Question
Carbon tetrachloride displays a triple point at 249.0 K and a melting point (at 1 atm) of 250.3 K. Which state of carbon tetrachloride is more dense, the solid or the liquid, and why?
13. Liquids, Solids & Intermolecular Forces
Phase Diagrams
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the phase diagram of methanol, what phase transition occurs at 25.0 °C when methanol evaporates?
A
Gas to liquid
B
Solid to gas
C
Solid to liquid
D
Liquid to gas
Verified step by step guidance1
Understand the concept of a phase diagram: A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure.
Identify the relevant phase transition: The problem asks about the phase transition of methanol at 25.0 °C when it evaporates. Evaporation is the process where a liquid turns into a gas.
Locate the temperature on the phase diagram: At 25.0 °C, methanol is typically in the liquid state under standard atmospheric pressure.
Determine the phase transition: Since evaporation involves the transition from liquid to gas, the phase transition occurring at 25.0 °C when methanol evaporates is from liquid to gas.
Review the options provided: The correct phase transition for methanol at 25.0 °C when it evaporates is 'Liquid to gas', as evaporation is the process of a liquid becoming a gas.
3:13mWatch next
Master States of Matter of Phase Diagrams with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
