### Phase Transition in a Substance**Question:**A substance is initially at 301 K and 1.01 bar (pressure unit). What phase transition occurs when the temperature changes to 201 K at constant pressure?**Graph Explanation:**The graph represents the phase diagram of a substance, showcasing the phases it will be in under different temperatures and pressure conditions. The y-axis represents the pressure in bar (not to scale) and the x-axis represents the temperature in Kelvin (K).- **Regions:** - The region labeled "Solid" represents the solid phase. - The region labeled "Liquid" represents the liquid phase. - The region labeled "Vapor" represents the vapor (gaseous) phase.**Key Points:**- The triple point is where all three phases coexist in equilibrium.- The graph exhibits the boundaries between different phases.**Current State:**The substance is initially at 301 K and 1.01 bar, which is in the "Liquid" region.**Temperature Change:**When the temperature is lowered to 201 K while maintaining a constant pressure of 1.01 bar, the substance moves into the "Solid" region.**Phase Transition:**The phase transition that occurs is indicated by the movement from the liquid region to the solid region on the phase diagram.**Multiple Choice Answer Options:**- Freezing- Sublimation- Condensation- Vaporization**Correct Answer:**- **Freezing**: The substance transitions from a liquid phase to a solid phase at constant pressure when the temperature is lowered from 301 K to 201 K.### Educational Content: Understanding Phase TransitionsIn this example, the process of freezing is explained using a phase diagram. The transition occurs due to a decrease in temperature while maintaining a constant pressure, leading to a change in the phase from liquid to solid. This is a fundamental concept in thermodynamics and is critical in understanding material properties and their applications in various fields such as chemistry, physics, and engineering.

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(12.8)A substance is initially at 301 K and 1.01 bar (pressure unit). What phase transition occurs when the temperature changes to 201 K at constant pressure? 49.0 Liquid 167 Solid 1.01 0.05 Vapor Pressure (bar) (not to scale) O freezing O sublimation O condensation O vaporization 279 353 Temperature (K) 562

(12.8)A substance is initially at 301 K and 1.01 bar (pressure unit). What phase transition occurs when the temperature changes to 201 K at constant pressure? 49.0 Liquid 167 Solid 1.01 0.05 Vapor Pressure (bar) (not to scale) O freezing O sublimation O condensation O vaporization 279 353 Temperature (K) 562

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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