Yeah, if you know about entropy, you'll understand the next bit
ΔG = ΔH - TΔS is the Gibb's equation for energy 'lost'
The enthalpy change for water to ice is ΔH = -6.01kJmol-1, and ΔS = -22J K-1mol-1, and T = 273 K (as we are at 0oC), so subbing those in gives..
ΔG = -6.01 - 273 x -0.022
= 1/250
Therefore, as that value is very small, H2O(l) <---> H2O(s) at 0oC
Liquid water can exist at (and above) 100 degrees Celsius if the pressure is increased above one atmosphere (about 100 000 Pascals). The high pressure squeezes the molecules together, and does not allow them to separate into a gas. This forces it to remain as a liquid, despite the high temperature. Of course, water vapour (steam) can certainly exist above 100 degrees Celsius.If you're interested in how the two phases exist together, if you heat water to 374 degrees Celsius and increase the pressure to 218 atmospheres, the properties of the liquid and the vapour merge together to form only one "supercritical fluid" phase.
I'm not clear on what you're asking. Water can exist at many different Celsius degrees. Below zero, it takes the form of ice. Above 100, it takes the form of steam.
Water and ice can coexist at 0 degrees Celsius because this is the temperature at which water transitions between its solid (ice) and liquid states. At 0 degrees Celsius, the rate of melting ice is equal to the rate of freezing liquid water, resulting in a dynamic equilibrium where both forms can exist simultaneously.
Zero Celsius
ice crystals start to form at 4 degrees Celsius
Yes, water can exist as a liquid at 50 degrees Celsius. The boiling point of water is 100 degrees Celsius, so at 50 degrees Celsius, the water is below its boiling point and remains in a liquid state.
Liquid water can exist at (and above) 100 degrees Celsius if the pressure is increased above one atmosphere (about 100 000 Pascals). The high pressure squeezes the molecules together, and does not allow them to separate into a gas. This forces it to remain as a liquid, despite the high temperature. Of course, water vapour (steam) can certainly exist above 100 degrees Celsius.If you're interested in how the two phases exist together, if you heat water to 374 degrees Celsius and increase the pressure to 218 atmospheres, the properties of the liquid and the vapour merge together to form only one "supercritical fluid" phase.
Water at 50 degrees Celsius is in the liquid state. At this temperature, water is above its freezing point (0 degrees Celsius) and below its boiling point (100 degrees Celsius), allowing it to exist as a liquid.
At around 0 degrees celsius, since that's the freezing point for water.
yes, you can have water at 0 degrees CELSIUS.
374 degrees Celsius
I'm not clear on what you're asking. Water can exist at many different Celsius degrees. Below zero, it takes the form of ice. Above 100, it takes the form of steam.
Water would be found in a gaseous state at 130 degrees Celsius, as this temperature exceeds the boiling point of water (100 degrees Celsius at standard pressure). At this temperature, water molecules have enough kinetic energy to overcome intermolecular forces and transition from liquid to gas. Therefore, water would exist as steam or water vapor at 130 degrees Celsius.
Water boils at 100 degrees Celsius and freezes at 0 degrees Celsius.
0 degrees celsius is the freezing point of water.
The boiling point of water is 100 degrees Celsius and the melting point of water is 0 degrees Celsius
Zero Celsius