Chapter 12.4, Problem 29SSC

Interpretation Introduction

Interpretation:

Deposition and sublimation must be compared.

Concept introduction:

Deposition and sublimation are two opposite physical processes in which phase change takes place in reverse way.

Answer to Problem 29SSC

In deposition process gas is converted to solid and in sublimation processes solid is converted to gas.

Explanation of Solution

Deposition process involves removal of thermal energy and so intermolecular force decreases and intermolecular distance increases. It converts gas to solid. For example iodine vapor is deposited to solid iodine. Sublimation process involves addition of thermal energy and so intermolecular force decreases and intermolecular distance increases. It converts solid to gas. For example solid iodine is converted to iodine vapor.

Conclusion

Deposition converts gas to solid whereas sublimation converts solid to gas.