Lesson: 01
Unit: 0
State Content Standard: Ideal Law's
Lesson Title: Avogadro's Law
Textbook page: 412-415
Chemistry Passport: Page 149
Objectives
1. To understand the law relating the volume and the number of moles of a sample of gas at constant temperature and pressure, and to do calculations.
2. Understand the ideal gas law and use it in calculations.
3. To understand the law that relates the pressure and volume of a gas.
Lesson Content
Lesson Content: Experiments show that when the number of moles in the gas is doubled (at constant temperature and pressure), the volume doubles. In other words, the volume of a gas is directly proportional to the number of moles if the temperature and pressure remain the same. You can use this equation V=AN or V/N=A to find out the relationship. Remember, this equation only works if the pressure and temperature is constant. Thus, when the number of moles of the gas is increased by 5, the volume also increases by 5.
Avogadro's law is also known as Avogadro hypothesis or Avogadro's principle.
This law is named in honor of Amedeo Avogadro. This hypothesis was not accepted in Avogadro's lifetime and it wasn't until Stanislao Cannizzaro's work in 1860 supported the hypothesis.
References
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