Question

With carbon dioxide, what phase change takes place when pressureincreases from 1 atm to 10 atm at -40°C?Carbon Dioxide Phase DiagramPressure (atm)20-15-10-5-MeltingpointSolid-100BoilingpointOA. A solid changes to a liquid.OB. A liquid changes to a solid.OC. A gas changes to a liquid.OD. A liquid changes to a gas.LiquidGas88853Temperature (°C)20

Answer 1

According to the phase diagram, when we have a change in pressure from 1 atm to 10 atm in pressure, at exactly -40°C, we will see CO2, going from a gaseous phase into a liquid phase. Therefore the best answer for this question will be letter C