what is actually different in between Regnault law ( that is pressure is proportional to temperature ) and Gay Lussacs Law of pressure ? Both the law give same equation that is pressure is proportional to temperature
Answers
Answer:
sorry
Explanation:
dont understanding
Answer:
When the temperature of a sample of gas in a rigid container is increased, the pressure of the gas increases as well. The increase in kinetic energy results in the molecules of gas striking the walls of the container with more force, resulting in a greater pressure. The French chemist Joseph Gay-Lussac (1778 - 1850) discovered the relationship between the pressure of a gas and its absolute temperature. Gay-Lussac's Law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant. Gay-Lussac's Law is very similar to Charles's Law, with the only difference being the type of container. Whereas the container in a Charles's Law experiment is flexible, it is rigid in a Gay-Lussac's Law experiment.
Figure 14.5.1 : Joseph Gay-Lussac. (CC BY-NC; CK-12)
The mathematical expressions for Gay-Lussac's Law are likewise similar to those of Charles's Law:
PTandP1T1=P2T2(14.5.1)
A graph of pressure vs. temperature also illustrates a direct relationship. As a gas is cooled at constant volume its pressure continually decreases until the gas condenses to a liquid.
EXAMPLE 14.5.1
The gas in an aerosol can is under a pressure of 3.00atm at a temperature of 25oC . It is dangerous to dispose of an aerosol can by incineration. What would the pressure in the aerosol can be at a temperature of 845oC ?
Solution:
Known
P1=3.00atm
T1=25oC=298K
T2=845oC=1118K
Unknown
P2=?atm
Use Gay-Lussac's Law to solve for the unknown pressure (P2) . The temperatures have first been converted to Kelvin.
Step 2: Solve.
First, rearrange the equation algebraically to solve for P2 .
P2=P1×T2T1(14.5.2)
Now substitute the known quantities into the equation and solve.
P2=3.00atm×1118K298K=11.3atm(14.5.3)
Step 3: Think about your result.
The pressure increases dramatically due to large increase in temperature