Consider the vaporization of liquid water to steam at a pressure of 1 atm. (a) Is this process endothermic or exothermic?

검증된 단계별 안내

Identify the process: Vaporization is the phase transition from liquid to gas.

Recall the energy requirement: Vaporization requires energy input to overcome intermolecular forces.

Determine the type of process: Since energy is absorbed from the surroundings, the process is endothermic.

Consider the system and surroundings: In an endothermic process, the system absorbs heat, causing the surroundings to cool down.

Conclude: The vaporization of liquid water to steam at 1 atm is an endothermic process.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Endothermic and Exothermic Processes

Endothermic processes absorb heat from the surroundings, resulting in a temperature decrease in the environment. In contrast, exothermic processes release heat, causing an increase in the surrounding temperature. Understanding these definitions is crucial for determining the nature of a phase change, such as vaporization.

Phase Changes

Phase changes refer to the transitions between different states of matter, such as solid, liquid, and gas. Vaporization, specifically, is the transition from liquid to gas, which requires energy input to overcome intermolecular forces. Recognizing the energy dynamics involved in phase changes helps in identifying whether they are endothermic or exothermic.

Latent Heat of Vaporization

The latent heat of vaporization is the amount of energy required to convert a unit mass of a liquid into vapor without a change in temperature. For water, this process at 1 atm pressure requires significant energy input, indicating that vaporization is an endothermic process. This concept is essential for understanding the energy requirements during phase transitions.