Gases Compressibility Explained
The ease with which gases can be compressed is a fundamental property related to their molecular structure.
Reason for Compressibility
- Gases consist of particles (atoms or molecules) that are widely separated from each other.
- There are large empty spaces between these particles compared to their size.
- When external pressure is applied, these particles can be easily pushed closer together, significantly reducing the gas volume.
Analysis of Options
- Option 1: large spaces between particles - This is the correct reason. The significant empty space allows the particles to move closer under pressure.
- Option 2: lack of particles - Gases do have particles; they are just spread far apart. This statement is inaccurate.
- Option 3: strong forces between particles - Gases have very weak intermolecular forces. Strong forces would resist compression, typical of liquids and solids.
- Option 4: high mass of particles - The mass of the particles does not directly determine the compressibility. Compressibility is primarily dependent on the spacing between particles.
Important Questions from States of Matter
A liquid is heated up to a certain temperature. Which one of the following situation would correspond to the boiling of the liquid?
Which one among the following oxides has the highest melting point?
Equal volume of all gases, when measured at the same temperature and pressure, contain an equal number of particles. Who proposed the above law?
Match List I with List II and select the correct answer using the code given below the Lists:
Code:List I (Noble gas)
List II (Use)
A. Argon
1. In lights for advertising display
B. Neon
2. Airport landing lights and in light houses
C. Krypton
3. Light in photographer’s flash gun
D. Xenon
4. In tungsten filament to last
Match List-I with List-II and select the correct answer using the code given below the Lists:
List I
(Process)
List II
(Type of change)
A. Heating of camphor
1. Chemical
B. Cooling of water vapor up to room temperature
2. Evaporation
C. Cooking an egg
3. Condensation
D. Formation of water vapor at room temperature.
4. Sublimation
