If a sealed syringe is heated, in which direction will the syringe plunger move?

Question

If a sealed syringe is heated, in which direction will the syringe plunger  move?

BlackTom AI · Accepted Answer

The question involves a sealed syringe that contains gas inside the barrel with a movable plunger. When the syringe is heated, the gas inside absorbs heat, increasing its temperature and, because it is gas, its molecules move more vigorously and tend to occupy more space. Since the syringe is sealed and the plunger provides the boundary of the gas volume, the internal pressure rises and exerts force on the plunger.
Option 1: 'out' — This is the correct direction because the increasing gas pressure pushes the plunger toward the outside of the syringe, expanding the gas volume against the plunger. The plunger moves outward to accommodate the expanding gas.
Option 2: 'in' — This would require the internal pressure to push the plunger inward, decreasing the gas volume, which contradicts the increased pressure from heating.
Option 3: 'The plunger will not move.' — Heating a sealed gas should produce pressure that acts on the plunger; unless the plunger were fixed, movement is expected, so this statement is false.
Option 4: 'The direction cannot be predicted.' — In this setup, thermodynamics provides a clear expectation: heating a sealed gas increases pressure that pushes the plunger outward; thus, the direction is predictable, making this option incorrect.

If a sealed syringe is heated, in which direction will the syringe plunger move?单项选择题

类似问题

What happens to the pressure of a gas inside a container if the temperature of the gas decreases?

What happens to the temperature of a gas when it is compressed?

If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide?

As the temperature of a fixed volume of a gas increases, the pressure will ____.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单