Finding Pressure when given change in temperature

In summary, the formula for finding pressure when given a change in temperature is P1/T1 = P2/T2, where P1 and T1 represent the initial pressure and temperature, and P2 and T2 represent the final pressure and temperature. Temperature and pressure have a direct relationship, meaning that as temperature increases, pressure also increases. However, in order to calculate pressure, both the initial and final temperature are needed, as well as the initial pressure and the volume of the gas. Temperature should be measured in Kelvin (K) and pressure should be measured in units of pressure, such as atmospheres (atm) or Pascals (Pa). According to the ideal gas law, when the temperature of a gas increases, the
  • #1
Timmey19
3
0
I have this problem: A 1.8L flask is filled with methane,CH4, at 863mmHg and 28C. if the flask is then heated to 164C what is the new pressure in atm?(assume ideal gas behaviour)

I know i need to use on of the gas laws but none of them seem to fit the picture.
thanks
 
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  • #2
Ive done some working
am i right in using P1V1/N1T1=P2V2/N2T2?

therefore P1/T1 = P2/T2
(using atm and K) 1.135526313/301 = P2/437
P2 = 1.6485 atm
 
  • #3
Way too many significant digits, but otherwise OK.
 

1. What is the formula for finding pressure when given a change in temperature?

The formula for finding pressure when given a change in temperature is P1/T1 = P2/T2, where P1 and T1 represent the initial pressure and temperature, and P2 and T2 represent the final pressure and temperature.

2. How does temperature affect pressure?

Temperature and pressure have a direct relationship, meaning that as temperature increases, pressure also increases. This is because an increase in temperature causes an increase in the speed and energy of gas molecules, resulting in more collisions with the walls of the container and therefore a higher pressure.

3. Can pressure be calculated using a single temperature measurement?

No, pressure cannot be calculated using a single temperature measurement. In order to calculate pressure, both the initial and final temperature are needed, as well as the initial pressure and the volume of the gas.

4. What units should be used for temperature and pressure in the formula?

Temperature should be measured in Kelvin (K) and pressure should be measured in units of pressure, such as atmospheres (atm) or Pascals (Pa). It is important to use consistent units in order to get an accurate result.

5. How does the volume of a gas affect the pressure when the temperature changes?

According to the ideal gas law, when the temperature of a gas increases, the volume also increases in order to keep the pressure constant. This means that as temperature increases, the volume of the gas will also increase, resulting in a decrease in pressure.

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