11 Questions
What is the definition of specific heat capacity at constant volume?
h = f(T)
What is the specific heat ratio (k) in ideal gas?
+R
Which law shows the relation h = f(T)?
Joule’s law
What type of system does Boyle's law and Joule's law apply to?
Constant volume system
What does entropy represent?
Availability for work conversion
According to the ideal gas law, what is an 'ideal gas' defined as?
A gas with no forces of intermolecular attraction
Which gas law states that volume of a given mass of a perfect gas varies inversely as the absolute pressure when temperature is constant?
Boyle’s Law
According to Charles Law, what happens to the volume of a gas when it is heated at constant pressure?
Volume changes directly as its absolute temperature
In the Combined Gas Law, what does 'R' represent?
Universal Gas Constant
When does a 'real gas' follow the gas laws?
At low pressures or high temperatures or both
According to Gay – Lussac’s Law, what happens to the pressure of a confined gas when the volume is constant?
Pressure is directly proportional to the absolute temperature
Study Notes
Thermodynamic Properties
- Specific heat capacity at constant volume is the amount of heat energy required to change the temperature of a unit mass of a substance by 1 degree Celsius at constant volume.
Ideal Gas Properties
- The specific heat ratio (k) in an ideal gas is the ratio of the specific heat capacity at constant pressure to the specific heat capacity at constant volume.
Thermodynamic Laws
- The law that shows the relation h = f(T) is Kirchhoff's law, which states that the entropy change of a system is proportional to the heat absorbed or rejected at constant temperature.
Gas Laws
- Boyle's law and Joule's law apply to ideal gases.
- Boyle's law states that the volume of a given mass of a perfect gas varies inversely as the absolute pressure when temperature is constant.
- According to Charles Law, when a gas is heated at constant pressure, its volume increases.
- In the Combined Gas Law, 'R' represents the gas constant.
- A 'real gas' follows the gas laws at low pressures and high temperatures.
- According to Gay-Lussac's Law, when the volume is constant, the pressure of a confined gas is directly proportional to the temperature.
Ideal Gas Definition
- An 'ideal gas' is defined as a gas that obeys the ideal gas law, meaning it has a constant volume, pressure, and temperature, and its molecules do not interact with each other.
Entropy
- Entropy represents the measure of disorder or randomness in a system.
Test your knowledge of the ideal gas law and Boyle's law with this quiz. Explore the behavior of ideal gases and their deviation from real gases at different pressures and temperatures.
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