Instructional Video

Ideal Gas Constant, R

Curated and Reviewed by Lesson Planet

The gas laws all solve for a constant, but none of them are truly constant in all situations. This video introduces the ideal gas constant, which is always the same. It explains how to solve for R and includes the numbers used on the Advanced Placement exam.

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Additional Tags
Instructional Ideas
  • Review STP before trying to solve for R
Classroom Considerations
  • Requires prior knowledge of Boyle's Law, Charles' Law, Gay-Lussac's Law, and Combined Gas Law
  • Stop video with 1:30 remaining to avoid incorrect equations
Pros
  • Defines the Equation of State
Cons
  • Includes an incorrect explanation for calculating gas density and molar mass