Triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium .
A critical point (or critical state) is the end point of a phase equilibrium . Triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium . It is represented by a point on p-v-T surface It is represented by a point on p-T diagram but appears as a line on p-v-T surface . A basic introduction to the triple point of water, which is the state where water can exist simultaneously in a liquid, solid, and gaseous form.
At critical point there is no distinction between the liquid and vapour phases . below critical point the substances exists in a two phases At triple point all the three phases can coexist together in equilibrium .The triple point describes the point where three phases (usually solid, liquid, and gas) of a material exist in equilibrium with one another.
Critical Point : The most prominent example is the liquid-vapor critical point, the end point of the pressure-temperature curve that designates conditions under which a liquid and its vapor can coexist.
Triple Point : For example : For example, the triple point of mercury occurs at a temperature of -38.83440 °C and a pressure of 0.2 mPa.
The triple point of water is defined to take place at 273.16 K, where K is the SI unit Kelvin. Unlike Celsius and Fahrenheit scales, Kelvin is not measured using degrees; we merely say "Kelvin."
The triple point of water is important enough to merit its own line:
T3 = 273.1K
This is equivalent to 0.01oC and 32.02oF, and thus we use T3 to help set the freezing point of water.
How to define triple point of temperature of any other material except water.
Answers
Sanjay Rawat
Triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium .
A critical point (or critical state) is the end point of a phase equilibrium . Triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium . It is represented by a point on p-v-T surface It is represented by a point on p-T diagram but appears as a line on p-v-T surface . A basic introduction to the triple point of water, which is the state where water can exist simultaneously in a liquid, solid, and gaseous form.
At critical point there is no distinction between the liquid and vapour phases . below critical point the substances exists in a two phases At triple point all the three phases can coexist together in equilibrium .The triple point describes the point where three phases (usually solid, liquid, and gas) of a material exist in equilibrium with one another.
Critical Point : The most prominent example is the liquid-vapor critical point, the end point of the pressure-temperature curve that designates conditions under which a liquid and its vapor can coexist.
Triple Point : For example : For example, the triple point of mercury occurs at a temperature of -38.83440 °C and a pressure of 0.2 mPa.
The triple point of water is defined to take place at 273.16 K, where K is the SI unit Kelvin. Unlike Celsius and Fahrenheit scales, Kelvin is not measured using degrees; we merely say "Kelvin."
The triple point of water is important enough to merit its own line:
T3 = 273.1K
This is equivalent to 0.01oC and 32.02oF, and thus we use T3 to help set the freezing point of water.