# In what phase is the substance at 50 C and 1 atm pressure?

## In what phase is the substance at 50 C and 1 atm pressure?

Answer: For example, a pressure of 50 kPa and a temperature of −10 °C correspond to the region of the diagram labeled “ice.” Under these conditions, water exists only as a solid (ice). A pressure of 50 kPa and a temperature of 50 °C correspond to the “water” region—here, water exists only as a liquid.

## What processes occur in co2 at 1 atm pressure and C?

Instead, cooling gaseous carbon dioxide at 1 atm results in its deposition into the solid state. Likewise, solid carbon dioxide does not melt at 1 atm pressure but instead sublimes to yield gaseous CO2.

## What phase change occurs if a substance at a pressure of 1 atm and increases to a temperature of?

At the atmospheric pressure of 1 atm, this phase transition occurs at 100o C (the normal boiling point of water). Liquid water becomes water vapor or steam when it enters the gaseous phase.

## What occurs at temperatures and pressures beyond the critical point in phase diagrams?

Beyond the temperature of the critical point, the merged single phase is known as a supercritical fluid. Triple Point occurs when both the temperature and pressure of the three phases of the substance coexist in equilibrium.

## What phase will exist at 1 atm and 70 C?

Notice that the triple point is well above 1 atm, indicating that carbon dioxide cannot exist as a liquid under ambient pressure conditions. Instead, cooling gaseous carbon dioxide at 1 atm results in its deposition into the solid state.

## What phases of water are present at a temperature of 0.01 C and 0.006 atm of pressure?

At the temperature of point T (273.16 K or 0.01°C) both ice and water have the same vapor pressure, 0.006 atm. Since the same vapor is in equilibrium with both liquid and solid, it follows that all three phases, ice, water, and vapor, are in equilibrium at point T.

## What are the critical temperature and pressure for CO2?

More specifically, it behaves as a supercritical fluid above its critical temperature (304.13 K, 31.0 °C, 87.8 °F) and critical pressure (7.3773 MPa, 72.8 atm, 1,070 psi, 73.8 bar), expanding to fill its container like a gas but with a density like that of a liquid.

## At what temperature and pressure do all three phases coexist?

The point at which these three lines intersect is called the triple point — at this exact combination of temperature and pressure, a substance can assume any of the three phases. The triple point for water is a temperature of 0.01 degrees Celsius (32.018 degrees Fahrenheit) and a pressure of 611.7 Pascals (.

## What is the critical pressure on a phase diagram?

The critical pressure (P c ) is the pressure that must be applied to the gas at the critical temperature in order to turn it into a liquid. For water, the critical pressure is very high, 217.75 atm. The critical point is the intersection point of the critical temperature and the critical pressure.

## At what pressure and temperature condition will all three phases of the substance be present?

Answer: At the pressure and temperature of the triple point, all three phases (solid, liquid and gas) exist in equilibrium. The triple point for water occurs at a pressure of 4.6 torr and 0.01oC.

## What is the state of water at 100 C and a pressure of 50 kPa?

liquid
A pressure of 50 kPa and a temperature of 50 °C correspond to the “water” region—here, water exists only as a liquid.

## What phase is matter most likely in at low temperature and low pressure?

solid phase
The solid phase is favored at low temperature and high pressure; the gas phase is favored at high temperature and low pressure. The lines in a phase diagram correspond to the combinations of temperature and pressure at which two phases can coexist in equilibrium.

## How does the phase diagram of water look like?

The phase diagram for water is shown in the Figure below . Phase diagram for water. In water’s diagram, the slope of the line between the solid and liquid states is negative rather than positive. The reason is that water is an unusual substance in that its solid state is less dense than the liquid state.

## At what temperature and pressure is CO2 a liquid?

Liquid carbon dioxide forms only at pressures above 5.1 atm; the triple point of carbon dioxide is about 518 kPa at −56.6 °C. The boiling point of the liquid is -70°F to +88°F, depending on pressure. When vaporized at 60°F, the expansion ratio is 535:1. CO2 exists as a gas or solid below 60 psig.

## What is the critical temperature and pressure of water?

In water, the critical point occurs at 647.096 K (373.946 °C; 705.103 °F) and 22.064 megapascals (3,200.1 psi; 217.75 atm). In the vicinity of the critical point, the physical properties of the liquid and the vapor change dramatically, with both phases becoming ever more similar.

## At what temperature will all three phases coexist?

32.018 degrees Fahrenheit
The point at which these three lines intersect is called the triple point — at this exact combination of temperature and pressure, a substance can assume any of the three phases. The triple point for water is a temperature of 0.01 degrees Celsius (32.018 degrees Fahrenheit) and a pressure of 611.7 Pascals (.

## At what temperature will the three phases coexist?

273.16 K
All three curves on the phase diagram meet at a single point, the triple point, where all three phases exist in equilibrium. For water, the triple point occurs at 273.16 K (0.01ºC), and is a more accurate calibration temperature than the melting point of water at 1.00 atm, or 273.15 K (0.0ºC).