Boyles Law and Combined Gas Law

In summary, the Constant in Boyles Law is the proportionality constant between pressure and volume for a fixed amount of an ideal gas at a fixed temperature. For the Combined Gas Law, there are multiple constants such as the ideal gas constant and Boltzmann's constant, which can provide more information about the gas. These constants can be learned about on Wikipedia.
  • #1
Mattmiles
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I am doing a bit of self study and background reading and was wondering if anyone could explain what the Constant is in Boyles Law and in the constant in the Combined Gas Law? Following on from that, what is the significance of the Constant? Does air have a particular constant for Boyles Law and and particular constant for the Combined Gas Law?

Any help would be much appreciated.

Matt
 
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  • #2
In the Boyle's law part of the question... Boyle's law is just pV = constant. Are you referring to that constant? It just says that: For a fixed amount of an ideal gas kept at a fixed temperature, P [pressure] and V [volume] are inversely proportional (while one doubles, the other halves).

For the combined gas law, the ideal gas constant, R (or the Boltzmann's constant, k) are just that, constants. This constant is different from the constant in Boyle's law, since this one can give you more information. In this case, pV = nRT = NkT.
And R = k times Avogadro's number (number of particles in one mole of particle)

You can actually learn about all these just from wikipedia.
 

1. What is Boyle's Law?

Boyle's Law is a gas law that states that the volume of a gas is inversely proportional to its pressure, when the temperature remains constant.

2. What is the formula for Boyle's Law?

The formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

3. How is Boyle's Law related to the Combined Gas Law?

Boyle's Law is one of the three gas laws that are combined to form the Combined Gas Law. The other two laws are Charles' Law and Gay-Lussac's Law.

4. What is the Combined Gas Law used for?

The Combined Gas Law is used to calculate the relationship between the pressure, volume, and temperature of a gas when all three variables are changing.

5. What are some real-life applications of Boyle's Law and the Combined Gas Law?

Some real-life applications of Boyle's Law and the Combined Gas Law include scuba diving, where changes in pressure affect the volume of air in the tank, and hot air balloons, where the volume of air inside the balloon changes as the temperature changes.

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