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Why the temperature does remain constant when a liquid starts changing to vapours?
Wiki User
∙ 12y ago
Because that temperature is needed to change its state.i.e.from solid to liquid.Transition of state can also occurs but not with all.
Answer:
The temperature of a liquid will fall as it evaporates as the heat heaves with the evaporated material. This is why sweating is a mechanism to cool the body or why a cup of hot coffee cools when open to the air.
As to the why, the most active fastest molecules are the ones that can break away from the fluid to disappear into the atmosphere. These contain the majority of the liquids heat. As they are removed the remaining molecules are cooler and the temperature of the liquid goes down.
Wiki User
∙ 12y ago
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What is dynamic equilibrium Describe what is happening to the liquid and vapor at the boundary of a liquid that is in dynamic equilibrium Is the overall balance of liquid and vapor changing?
1. Dynamic equilibrium is when the rate of vapour and liquid being produced has stabilized, and stopped changing. It's called dynamic equilibrium because the liquid hasn't stopped changing into vapour, and the vapour hasn't stopped changing into liquid, but the rates of these two changes has stabilized so that there is a constant amount of liquid and vapour present.2. At the boundary of the liquid, particles with sufficient energy break away from the liquid and become vapours, and vapour molecules with low energy, or those that make contact with the surface of the liquid, become bonded to the liquid. There is a constant exchange of particles, hence dynamicequilibrium3. No, the overall balance of liquid is constant, hence equilibrium.
When heat is added to a liquid at the boiling temperature it converts the liquid into a gas at the same temperature because?
The additional heat, called "enthalpy" completes the phase change, by changing the arrangement of the molecules in the existing environment, not the temperature. The energy must be removed from a gas to cause condensation into liquid, and from a liquid to cause solidification (freezing). Conversely, it is added when changing a solid to a liquid or a liquid to a gas. At a certain temperature (critical temperature), the process happens spontaneously because the phase boundary disappears.
When will liquid alcohol change to vapor?
Any form of liquid alcohol will change to vapor when its temperature reaches the boiling point (different for each type of alcohol).Alcohol (ethyl alcohol) is a volatile liquid and changes in to vapours at every temperature although its boiling point is 78.5 Celsius.
What happens to the temperature of boiling water when heat is added to the boiling water?
If you add energy to a boiling liquid, it will just boil faster, but the temperature will remain the same, at the boiling point. All the energy goes into phase change, not heating.
When solid changes into liquid?
Solids changing to liquids are melting Liquids changing to solids are freezing Solids changing to gas are subliming Liquids changing to gas are boiling Gases changing to liquids are condensing.
What is the gaseous form of a substance which exists as a liquid at a room temperature known as?
You think to vapours of a liquid.
Can a liquid and gas together be at same temperature?
Yes, at boiling point and in a close container a liquid and its vapours coexist.
What is dynamic equilibrium Describe what is happening to the liquid and vapor at the boundary of a liquid that is in dynamic equilibrium Is the overall balance of liquid and vapor changing?
1. Dynamic equilibrium is when the rate of vapour and liquid being produced has stabilized, and stopped changing. It's called dynamic equilibrium because the liquid hasn't stopped changing into vapour, and the vapour hasn't stopped changing into liquid, but the rates of these two changes has stabilized so that there is a constant amount of liquid and vapour present.2. At the boundary of the liquid, particles with sufficient energy break away from the liquid and become vapours, and vapour molecules with low energy, or those that make contact with the surface of the liquid, become bonded to the liquid. There is a constant exchange of particles, hence dynamicequilibrium3. No, the overall balance of liquid is constant, hence equilibrium.
Why liquid boils at constant temperature at a given temperature?
Yes.
Boiling liquid maintains a constant temperature?
The boiling point temperature remains constant because liquids evaporate at this point. If the temperature drops the liquid will no longer boil. At a higher temperature the vapor becomes hotter, not the liquid.
When a liquid is changing to a solid what is it?
freezing temperature
The temperature at which a gas starts changing into a liquid is called?
Its condensation temperature.
What state change happens during condensation?
The energy change that occurs during condensation is: temperature.
What happens to the thermal energy of a substance during a physical change of state?
it will increase or decrease depending on the states. from solid --> liquid or liquid --> gas it is positive and endothermic, and thermal energy is increasing from liquid --> solid or gas --> liquid it is negative and exothermic, and thermal energy is decreasing
Changing solid into liquid by increasing temperature?
Ice
Why does temperature become constant at boiling point of liquid?
this is because the extra heat energy is used up in changing the state of matter by overcoming the forces of attraction between the particles of liquid.
What is the difference between latent heat of fusion and latent heat of vapourization?
the heat which is absorbed by a substance for changing solid into liquid state by keeping temperature constant is called latent heat of fusion while the heat which is evolved during phase change of liquid to vapour state at constant temperature is called latent heat of vapourization
