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P 1 T 1= P 2 T 2 In an ideal gas, particles are considered to interact only when

ID: 971240 • Letter: P

Question

P1T1=P2T2

In an ideal gas, particles are considered to interact only when they collide, with no loss in energy or speed occurring during the collision. Studying ideal gases allows for simplifications, such as Gay-Lussac's law.

A. A sample of a gas is in a sealed container. The pressure of the gas is 805 torr , and the temperature is 18 C . If the temperature changes to 99 C with no change in volume or amount of gas, what is the new pressure, P2, of the gas inside the container?

B. Using the same sample of gas (P1 = 805 torr , T1 = 18 C ), we wish to change the pressure to 8050 torr with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure?

Explanation / Answer

A)P1=805 torr

T1=18+273=291K

P2=?

T2=99+273=382K

P1/T1=P2/T2 (gay lussac's law)

P2=P1*T2/T1=805 torr*382K/291K=1056.73 torr

B)T2=P2*T1/P1=8050 torr*291K/805 torr=2910K