Q. How does the type of liquid affect evaporation?
This is because different molecules require varying quantities of energy to evaporate. Heavier molecules need more energy than lighter molecules, as more mass requires more power. Similarly, the density of a given liquid will affect the rate at which liquids can heat up, and therefore evaporate.
Q. Do nature of liquid affect evaporation?
Rate of evaporation depends upon the nature of the liquid; for example, petrol evaporates faster than water. 6. Vapor pressure: if pressure is applied on the surface of a liquid, evaporation is hindered; consider, for example, the case of a pressure cooker.
Q. Does depth of liquid affect the rate of evaporation?
A similar initial rate of evaporation was observed for all watertable depths, close to that for open water. However, the progress of the relative rate of evaporation, E/Eo, with time differed; the deeper the watertable, the steeper was the falling rate of evaporation.
Q. At what temperature does gas turn into liquid?
Boiling and Condensation Again, at a certain temperature called the boiling point, the molecules will gain enough energy to break free and become a gas. The boiling point for water is 100 degrees C (212 degrees F). When the opposite occurs and a gas becomes a liquid, it is called condensation.
Q. What is the temperature of liquid A?
Answer: The temperature at which a liquid begins to boil is called the boiling point (bp). The bp is dependent on atmospheric pressure, but for water at sea level, it’s 212°F, or 100°C.
Q. At what temperature will both liquid and gas be present in benzene?
Below 5 degrees C, benzene is a solid. Above 80 degrees C, it is a gas (at 1 atm). It is a liquid at room temperature.
Q. Why does the temperature remain constant during melting and boiling?
The extra heat supplied is used in the melting of ice which is called the latent heat of fusion. Similarly, when a liquid starts boiling the temperature of the liquid does not change instead of a continuous supply of heat. That’s why the temperature of a substance remains constant during its melting or boiling.
Q. When water boils its temperature remains the same?
When water boils its temperature remains constant. It is because of latent heat. The heat given to the system is spared for phase transition of water. The heat given to the system is absorbed as latent heat.
Q. Is energy absorbed or released during melting?
Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy.
Q. When a liquid boils its temperature remains the same so where does the heat go?
The temperature remains constant during boiling of water even though heat is supplied constantly because all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour.
Q. When a liquid is boiling its temperature does not change?
At the boiling point, temperature no longer rises with heat added because the energy is once again being used to break intermolecular bonds. Once all water has been boiled to steam, the temperature will continue to rise linearly as heat is added.
Q. Which solution will boil at constant temperature?
azeotropes
Q. What is the relationship between vapor pressure and boiling point?
The higher the vapor pressure of a liquid at a given temperature, the lower the normal boiling point (i.e., the boiling point at atmospheric pressure) of the liquid.
