1
State the relationship between pressure and temperature at constant volume.
Directly propotional
Calculate the volume occupied by 0.500 mol of gas at 273 K and 100 kPa.
11.3 dm
What happens to pressure if temperature decreases at constant volume? Why?
Pressure decreases due to decreased frequency in collisions between the walls and the particle.
At constant temperature, if pressure doubles, what happens to volume?
Volume halves
What is the difference between n and N in PV = NRT and PV = NkbT
Convert 45°C to Kelvin.
318 K
A gas occupies 10.0 dm³ at 100 kPa. What happens to the pressure if the volume is reduced to 5.00 dm³ at constant temperature?
200 kPa
Calculate the number of moles in 2.00 dm³ of gas at 100 kPa and 300 K.
0.0802 mol
State two conditions under which gases behave most ideally.
At high temperatures, and low pressure
A gas at constant pressure increases in temperature from 300 K to 360 K. By what percentage does the volume change?
20%
A gas occupies 15.0 dm³ at 100 kPa and 350 K. It is heated to 525 K at constant volume. Determine the final pressure.
150 kPa
Determine the volume occupied by 0.750 mol of gas at 450 K and 150 kPa.
18.7 dm
A gas at 250 kPa occupies 4.00 dm³. It expands to 10.0 dm³ at constant temperature. Determine the final pressure.
100 kPa
Calculate the number of moles of gas present in a 5.00 dm³ container at 200 kPa and 320 K.
0.376 mol
A gas at 120 kPa and 8.00 dm³ is compressed to 5.00 dm³ at constant temperature. Determine the final pressure.
192 kPa
A gas at 200 kPa and 300 K is compressed to 5.00 dm³ and heated to 450 K. If the initial volume was 10.0 dm³, determine the final pressure.
600 kPa
Calculate the mass of NH₃ occupying 8.00 dm³ at 250 kPa and 320 K.
12.8 g
A 2.00 mol gas sample at 400 K in a rigid container exerts 300 kPa. The temperature is decreased to 200 K. Determine the new pressure and explain physically why.
150 kPa
A gas occupies 12.0 dm³ at 100 kPa and 300 K. It is heated to 450 K and compressed to 8.00 dm³. Determine the final pressure.
225 kPa
Calculate the mass of CO₂ that exerts a pressure of 250 kPa in a 10.0 dm³ container at 320 K.
41.4 g
A 15.0 dm³ rigid container at 400 K contains 2.0 mol of N₂. An unknown amount of He is added, raising the total pressure to 900 kPa. Calculate the mass of helium added.
8.24 g
Two gases, A and B, each 1.0 mol, are placed separately into identical containers at the same temperature. Gas A exerts a lower pressure than gas B. Both behave non-ideally. Predict which gas has stronger intermolecular forces and justify your reasoning using kinetic theory.
Gas A has stronger intermolecular forces.
What is the value of R in PV = nRT
8.31 J/Kmol
A gas at 500 kPa and 600 K is expanded until its volume triples and its temperature decreases to 300 K. Determine the final pressure.
83.3 kPa
A 12.0 dm³ container at 300 K contains 1.00 mol of gas. The temperature is increased until the pressure doubles while the container expands against a piston and the final volume becomes 18.0 dm³. Determine the final temperature.
900 K