Question

Explain why solid $\mathrm{CO}_{2}$ is referred to as dry ice.

   Explain why solid $\mathrm{CO}_{2}$ is referred to as dry ice.

Chemistry A Molecular Approach

Chemistry A Molecular Approach

Nivaldo J. Tro 5th Edition

Chapter 24, Problem 9

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Solved by Expert Amy Jiang

02/10/2020

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Dry ice is the solid form of carbon dioxide, which is represented chemically as \(\mathrm{CO}_{2}\). Show more…

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Explain why solid $\mathrm{CO}_{2}$ is referred to as dry ice.

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Key Concepts

Sublimation

Sublimation is the process by which a substance transitions directly from the solid phase to the gaseous phase without passing through an intermediate liquid phase. In the case of solid CO2, it sublimates into CO2 gas at atmospheric pressure, so it never becomes wet, which is why it is called dry ice.

Phase Transition

A phase transition describes the change of a substance from one state of matter to another, such as from solid to gas. For solid CO2, the transition occurs directly to the gas phase due to conditions in its phase diagram, reinforcing the characteristic of not forming a liquid state.

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