Formula: V=k/P
V refers to the volume of gas.
P refers to pressure.
K is a constant
This formula can be further deduced, and the product of the volume and force of an ideal gas becomes a constant, namely:
PV=k
If the temperature is the same, the gas relationship between A and B can be expressed as:
PAVA=PBVB
Traditionally, this formula can be written as:
The significance of P2 = p1v1v2 Boyle's law. Boyle's theory was the first quantitative formula to describe the movement of gas, which laid the foundation for the quantitative research and chemical analysis of gas. This law is the basis of learning chemistry, and students should learn it at the beginning of learning chemistry.
Boyle has a gift for doing experiments, and he also proved that gas, like solids, is made up of atoms. But in gas, atoms are far apart, so they can be squeezed more closely. As early as 440 BC, Democritus put forward the existence of atoms, and people have been arguing about it for the next two thousand years. Through experiments, Boyle is a scientific community that believes that atoms do exist. The discovery process of Boyle's law Boyle was born in the earl's family and is a member of the British Science Association. In 1662, robert hooke read a paper describing the French "aeroelasticity" experiment. In the17th century, scientists became interested in air.
French scientists made a brass cylinder with a piston in the middle and installed it tightly. Several people pressed the piston hard to compress the air in the cylinder. Then, they released the pistons, and the pistons bounced back, but not all the pistons bounced back. No matter how many times they do experiments, the pistons can't all bounce back.
French scientists declared through this experiment that air is completely inelastic and will remain slightly compressed after compression.
Boyle claimed that the experiments of French scientists could not explain anything. He pointed out that the piston could not bounce back completely because the piston they used was too tight. Some people retort that if the piston is a little loose, there will be air leakage around it, which will affect the experiment.
Robert Boyle promised to make an excellent piston with moderate tightness, and the results proved that the above experiment was wrong.
Two weeks later, Robert Boyle stood in front of the members with a big U-shaped glass tube. This u-shaped glass tube is asymmetrical. One is thin and long, more than 3 feet high. The other is short and thick. Short top seal, long top opening.
Boyle poured mercury into the glass tube, which covered the bottom of the U-shaped glass tube and slightly bulged on both sides. In a closed short tube, mercury blocked a small stream of air. Boyle explained that a piston is any device that compresses air, and mercury can also be regarded as a "piston". As expected in the French experiment, Boyle's practice will not affect the experimental results because of friction.
Boyle recorded the weight of mercury and carved a line at the junction of mercury and air. He dripped silver into the long glass tube until it was full. At this time, mercury rises to half the height in the short glass tube. Under the pressure of mercury, the blocked air volume becomes less than half of its original volume.
On the short glass tube, Boyle carved a second line, indicating the new height of mercury inside and the compressed volume of blocked air.
Then, through the valve at the bottom of the U-shaped glass tube, he discharged the mercury until the weight of the glass piston and mercury was exactly the same as at the beginning of the experiment. The mercury column returned to the height where the experiment started, and the blocked air returned to its original position. The air is really elastic. The experiment of French scientists is wrong and Boyle is right.
Robert Boyle continued his experiments with glass pistons and found many noteworthy things. When he exerts double pressure on the blocked air, the volume of the air will be halved; When the pressure is tripled, the volume will become the original 1/3. When squeezed, the change of air volume is always proportional to the change of pressure. He created a simple mathematical equation to express this proportional relationship, which we now call Boyle's law. This law is extremely important for understanding the atmosphere and using it to serve mankind.