Question

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Q⬛What is Charles law?

Explain with three examples.....



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♦Divjot♦

Answer 1

Charles law is a special case of ideal gas law . It states that the volume of a fixed mass of gas is directly proportional to the temperature. This law applies to ideal gases , held at a constant pressure , where only the temperature and volume are allowed to changed.
This law is expressed as :-
Vi/Ti = Vf/Tf
where,
Vi = initial volume
Ti = initial absolute temperature
Vf = final volume
Tf = final absolute temperature

It is important to remember that the temperatures are absolute temperature measured in Kelvin, not in Celsius or Fahrenheit .

Example,
A gas occupies 221 cm3 at a temperature of 0 C and pressure of 760 mm Hg. What will its volume be at 100 C?

Solution,

Since the pressure is constant and the mass of gas doesn't change, you know you can apply Charles' law. The temperatures are given in Celsius, so they must first be converted into absolute temperature (Kelvin) to apply the formula:

V1 = 221cm3; T1 = 273K (0 + 273); T2 = 373K (100 + 273)

Now the values can be plugged into the formula to solve for final volume:

Vi/Ti = Vf/Tf
221cm3 / 273K = Vf / 373K

Rearranging the equation  to solve for final volume:

Vf  = (221 cm3)(373K) / 273K

Vf  = 302 cm3

I think 1 example is sufficient to understand.
Hope it may help you .

And i wanna know that in which class are you studying.... If you can answer me then please answer.

Answer 2

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Charles law is a. law Which states that Volume of a given Mass of a dry gas is directly proportional to its absolute(Kelvin) temperature ,if the pressure remains constant