Question

Gay-Lussac's law states that the pressure of a gas is directly related to its absolute temperature, provided the volume and number of moles of the gas remain the same: (Figure 1) 

Part A 

A sample of ideal gas is in a sealed container. The pressure of the gas is 145 torr, and the temperature is 39 °C. If the temperature changes to 80 °C with no change in volume or amount of gas, what is the new pressure, P2, of the gas inside the container? 

Express your answer with the appropriate units. 

Part B 

Using the same sample of gas (P = 145 torr, Ti = 39 °C), we wish to change the pressure to 1450 torr with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure?

Answer 1

Part-A AS there is no change in olome & molea, 1 Ti Et3+39) 164 torr& 73+80) Part-B inilarly P jmilarly P 144 273+39) 1450 3120 Keluia &847C 17