States of Matter: Overview, Questions, Preparation

Jacques Charles was a French founder, scientist, mathematician, and balloonist. Charles Law is all about the volume of the ideal gas at a consistent pressure and is directly proportional to the absolute temperature. Charles Law, also referred to as the law of volumes, provides information on how gas increases when the temperature rises. 

If we use V1 and T1, they stand for the initial volume and gas temperature, and V2 and T2 as the final volume and temperature. The mathematical relationship of the Law of Charles becomes: 

Equation IS = V2 / T2 can be V1 X T2 = V2 X T1. 

Charles's Law is a unique theory law on gas. This law applies to gases that keep under constant pressure, but the temperature and volume are constantly changing. We can understand that, notably, the density of the gas is inversely proportional to the temperature in the Kelvin units, when it is at a constant mass and pressure.

A hot air balloon, the human lungs, pool floats, a ping-pong ball with rackets, tyres, helium balloons, delicious bakery products like bread and cakes are some real-life examples of Charles's Law.

The connection between the volume and the gas temperature can be constructed by graph plotting. 

A straight line has been obtained. Here we are using a unit of temperature in Kelvin, for graphical presentation in Celsius units. 

The values of volumes and temperature confirm the basics of Charles Law. If the extrapolated linear straight-line graph is pulled down to the back, then the gas volume will be zero at -2730C. As discussed earlier, -2730c scale is known as the absolute zero temperature and its utility in various industries is considered highly promising and significant.

In the exam, (States of Matter OR Charles Law) along with Unit 4, 6, and 7 has a weightage of approximately 21 marks.

1. Which law is the following formula?

V1/T1=V2/T2 

Answer: Charles Law

2. A metal container of gas has a volume of 1500mL at 300C. What volume will the gas occupy at 00C if the pressure remains constant?

Answer: By Charles Law, we can say: 

V1 / T1 = V2 / T2 

We have to convert the given temperatures to Kelvin.

30⁰C+273=303K

0⁰C+273=273K

We have to use these temperatures and the initial volume and then we can solve for the final volume of the gas.

The equation will be 1500mL / 303K=V2 / 273K

Then, The equation will be V2=(1500mL) X (273K) / 303K

Hence, the final volume will be after calculation, V2= 1351.48 which approximately = (1351mL)

Q: What does Charles Law give its mathematical equation?

Q: What, in a simple concept, is Charles Law?

Q: Why does pressure have importance in Charles Law?

Q: In Charles Law, what are those constants?

Q: Why is the law of Charles significant?