Charles Law Formula
When the pressure of a gas is held constant, the temperature of the gas will be directly proportional to the volume of the sample gas.
This phenomenon was discovered by a French scientist, inventor, and mathematician Jacques Charles; that is why this gas law bears his name.
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Let us compare the same substance under two different conditions, then Charles gas law formula can be stated as:
The above Charles’ law formula shows that “the temperature of the gas is directly proportional to the volume of the sample gas.
Charles Law Examples
Well, examples of Charles Law can be classified into two categories such as Mathematical Examples Of Charles Law and Charles Law Examples in Real Life. Let us see both of them one by one…!!!
Mathematical Examples Of Charles Law
1. A gas occupies 300 cm3 at a temperature of 0 °C and pressure of 670 mm Hg. What will its volume be at 100 °C?
ANS:- As we know, according to Charles law equation,
2. When 450 mL of lithium gas is heated from 20 °C to 80 °C at constant pressure. what will be the final volume of lithium gas at 80 °C?
Charles Law Examples In Real Life
If you think, you can’t relate day to day life situations with Charles’s Law, You Are Wrong. Well, here is your chance to think again!!
In fact, there are several examples of Charles Law In Real Life which is easy to understand or even you can do experiments related to them. Let’s discuss a few of them one by one.
Pop Up Turkey Timer
Pop-Up Turkey Timer (Thermometer) working is based on Charles’s Law. As Charles’s Law states, ” gas tends to expand when heated”, the same phenomenon works for Pop Up Turkey Timer.
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The thermometer is well placed inside the turkey. As the turkey cooks, the gas inside the thermometer expands with an increase in temperature. The thermometer pops off, indicating that the turkey is cooked and ready to serve.
Deodorant Spray Bottle
As of today’s world, we all are well aware of the fact that what are deodorants? And why they are being used? I also wonder that many of us also get a chance to read the instruction written as a warning sign such as a ” pressurized container.
Protect it from sunlight. Do not expose to temperature exceeding 50°C.” Ever thought why? Well yes, you guess is right. It’s because of Charles’s Law.
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According to Charles law Definition, “under high temperature, the gas molecules inside the deodorant bottle expand and which can lead to the bursting of the deodorant bottle”.
Helium Balloon on Cold Day
Everyone is quite aware of what Helium Balloon is. We all remember that during our childhood days when we step outside our home with a helium balloon on the chilly days (winter season of course).
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The balloon will shrink a bit due to the degree of coldness or decrease in temperature. It happens because of Charle’s Law; as it states “when the temperature decreases so do the volume will.”