. What phase is water in at 100°C and 2 atm pressure?
1 atm = 101.3 KPa
Looking at the phase diagram for H2O, it looks like 202KPa and 100°C is inside the vapor state.
Oops. Make that liquid. (I was looking at 2KPa, not 200KPa)
Well, water at 100°C and 2 atm pressure is in a very special phase known as "the boiling phase!" It's like water is having a really steamy hot tub party and turning into vapor. So, if you want to have a bubbly time, just grab your towel and join the water's boiling phase party!
At 100°C and 2 atm pressure, water is in the liquid phase.
To determine the phase of water at a specific temperature and pressure, we can refer to the phase diagram of water. A phase diagram shows the relationship between temperature, pressure, and the phases of a substance.
In the case of water, the phase diagram consists of three regions: the solid (ice), liquid (water), and gas (water vapor) phases. These regions are separated by lines that represent the conditions at which two phases coexist.
At atmospheric pressure, which is approximately 1 atm, the phase diagram of water indicates that water is in a liquid state at temperatures above 0°C. As the temperature increases, water undergoes a phase transition from a liquid to a gas (water vapor) state.
At 100°C and 1 atm pressure, the phase diagram of water tells us that water is in a gaseous state. However, you mentioned a pressure of 2 atm. To determine the phase of water at this pressure and temperature, we need to trace the 2 atm line on the phase diagram.
By following the 2 atm line, we can observe that it intersects the liquid-gas (vaporization) boundary line at approximately 100°C. This means that at 100°C and 2 atm pressure, water will still be in a gas phase (water vapor).
In summary, at 100°C and 2 atm pressure, water is in the gas phase (water vapor).