Boyle's Law (Inverse Relationship between Pressure and Volume):
- States that the pressure of a gas is inversely proportional to its volume when temperature and the amount of gas remain constant.
- If the volume of a gas container decreases, the pressure increases, and vice versa.
- Mathematically, Boyle's Law is expressed as P1V1 = P2V2.
Charles's Law (Direct Relationship between Volume and Temperature):
- Describes the relationship between the volume and temperature of a gas at constant pressure and a fixed amount of gas.
- As temperature increases, the volume of a gas also increases, and as temperature decreases, volume decreases.
- Mathematically, Charles's Law is expressed as V1/T1 = V2/T2.
Gay-Lussac's Law (Direct Relationship between Pressure and Temperature):
- Explains how the pressure of a gas is directly proportional to its temperature when volume and the amount of gas remain constant.
- If the temperature of a gas increases, the pressure increases proportionally, and if temperature decreases, pressure decreases.
- Mathematically, Gay-Lussac's Law is expressed as P1/T1 = P2/T2.
Avogadro's Law (Equal Volumes Contain Equal Number of Molecules):
- States that equal volumes of gases at the same temperature and pressure contain an equal number of molecules.
- If the volume of a gas container increases while temperature and pressure remain constant, the number of molecules in that volume decreases, and vice versa.
Dalton's Law of Partial Pressures:
- Explains how the total pressure of a mixture of gases is equal to the sum of the partial pressures exerted by each individual gas in the mixture.
- The partial pressure of a gas is the pressure it would exert if it occupied the entire volume alone at the same temperature.
Kinetic Molecular Theory:
- Describes the behavior of gases on the microscopic level. It states that:
- Gas particles are constantly in motion and move randomly in all directions.
- Gas particles collide with each other and with the walls of their container.
- These collisions are elastic, meaning that the total energy of the system is conserved.
- The average kinetic energy of gas particles is proportional to the temperature of the gas.
These laws and theories collectively explain the behavior of gases, allowing us to predict and understand how they respond to changes in pressure, volume, temperature, and composition.
