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What are the phase change processes taking place when a substance is in equlibrium between liquid and gas phase?
During equilibrium between liquid and gas phases, the substance undergoes both evaporation (liquid to gas) and condensation (gas to liquid) processes simultaneously. The rate of evaporation equals the rate of condensation, leading to no net change in the amount of liquid or gas over time. This dynamic equilibrium is maintained as long as the system's temperature and pressure remain constant.
Why does temperature remain constant during the boiling of water although is supplied?
The boiling water at its boiling point uses the extra energy being supplied to transform its state from liquid to gas (steam) at the rate of 540 cals per gram. Now if you have the water boiling in a pressurized vessel you can make the water boil at a higher temperature and this is used in certain applications but the temperature will remain constant at that pressure as long as there is water to be converted to steam.
What is the temperature of water after boiling for 5 minutes?
after 5 minutes the water vaporates (it turnes from water into steam) Until all molecules have gone from liquid to gas, the temperature is steady at boiling temp, 100C.
How can the rate constant be determined from the rate law?
The rate constant is the reaction rate divided by the concentration terms.
If a container is half filled with a liquid and sealed at room temperature and atmospheric pressure then what happens inside the container?
Inside the container, the liquid would partially evaporate, creating vapor in the empty space above the liquid. Eventually, an equilibrium will be reached where the rate of evaporation equals the rate of condensation, resulting in a constant vapor-liquid mixture within the container.
What is the temperature at which a liquid and gaseous phases are in equilibrium?
The temperature at which a liquid and gas are in equilibrium is called the boiling point. At this temperature, the vapor pressure of the liquid equals the atmospheric pressure, allowing the liquid to change into gas and vice versa at a constant rate.
Thickness of liquid affect it's boiling rate?
Yes, the thickness of a liquid can affect its boiling rate. Thicker liquids generally have stronger intermolecular forces that need to be overcome for boiling to occur, resulting in a slower boiling rate. Thinner liquids with weaker intermolecular forces tend to boil more quickly.
What happens when a boiling liquid is heated more strongly?
When a boiling liquid is heated more strongly, its temperature remains constant at the boiling point, but the rate of vaporization increases. This results in more liquid molecules transitioning into the gas phase, producing more vapor. If the heat source continues to increase, the pressure in a closed system can rise significantly, potentially leading to dangerous conditions such as explosions. In an open system, excess heat may lead to rapid boiling and splattering of the liquid.
What is the relationship between the rate of evaporation and the rate of condensation of the vapor of a liquid in a closed container and has a constant vapor pressure?
In a system at constant vapor pressure, a dynamic equilibrium exists between the vapor and the liquid. The system is in equilibrium because the rate of evaporation of liquid equals the rate of condensation of vapor. -KarkatHorns
What the advantages using mercury in thermometer?
it expands at constant rate and has got high boiling point.
When the vapor pressure of a liquid equals the air pressure in the room what will the liquid do?
When the vapor pressure of the liquid equals the air pressure in the room, the liquid will reach equilibrium and stop evaporating. This is because the rate of evaporation is equal to the rate of condensation.
Which liquid is having the highest rate of evaporation?
The liquid with the highest rate of evaporation would generally be the one with the lowest boiling point. This means that substances like acetone or ethanol, which have low boiling points, will evaporate more quickly than water or oil.
What are the phase change processes taking place when a substance is in equlibrium between liquid and gas phase?
During equilibrium between liquid and gas phases, the substance undergoes both evaporation (liquid to gas) and condensation (gas to liquid) processes simultaneously. The rate of evaporation equals the rate of condensation, leading to no net change in the amount of liquid or gas over time. This dynamic equilibrium is maintained as long as the system's temperature and pressure remain constant.
Why does temperature remain constant during the boiling of water although is supplied?
The boiling water at its boiling point uses the extra energy being supplied to transform its state from liquid to gas (steam) at the rate of 540 cals per gram. Now if you have the water boiling in a pressurized vessel you can make the water boil at a higher temperature and this is used in certain applications but the temperature will remain constant at that pressure as long as there is water to be converted to steam.
What is the temperature of water after boiling for 5 minutes?
after 5 minutes the water vaporates (it turnes from water into steam) Until all molecules have gone from liquid to gas, the temperature is steady at boiling temp, 100C.
Does boiling water cool to room temperature at a constant rate?
No, boiling water cools down at a non-constant rate. Initially, it cools down faster as the temperature difference between the water and the room decreases. As the water gets closer to room temperature, the rate of cooling slows down.
How are boiling and evaporating similar?
Boiling is when a liquid starts ti make the change from a liquid to a gas, and evaporation is when a a liquid is somewhat "drying up" and becoming a gas, so they are both a liquid becoming a gas, boiling is almost just a type of evaporation. hope that helps!
