In the following process the changes in each step have to be explained – “A flask of water is connected to a powerful vacuum pump. When the pump is turned on the water begins to boil. After few minutes, the same water begins to freeze. Eventually the ice disappears.” Concept Introduction: Boiling point of a liquid substance is defined as the temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure. Sublimation is the process of direct conversion of solid to gas.

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Chapter 12, Problem 12.86QP

Interpretation Introduction

Interpretation:

In the following process the changes in each step have to be explained –

“A flask of water is connected to a powerful vacuum pump. When the pump is turned on the water begins to boil. After few minutes, the same water begins to freeze. Eventually the ice disappears.”

Concept Introduction:

Boiling point of a liquid substance is defined as the temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure. Sublimation is the process of direct conversion of solid to gas.

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