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because nature of liquid means a attractive forces less attractive forces means low vapour pressure
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Why vapour pressure is independent of the amount of liquid and surface area of liquid?
rate of evaporation become equal to rate of condensation
What halogen has a deep brown vapour?
Bromine. This is a liquid at room temperature and pressure but fumes a rich reddy brown vapour. Keep it in a fume cupboard.
What is the Definition of vaper density?
the density of a gas relative to the density of hydrogen
What is the effect of nature of liquid on the rate of evaporation?
heat, humidity,wind and the surface area of container that it is in.
Does salt water boil fast as fresh water?
Salt water boils at a higher temperature than fresh water. If a substance (salt) has a lower vapour pressure than the liquid (water) (it's relatively non-volatile in other words) then dissolving that substance in the liquid, common salt (NaCl) in water (H2O), for instance, will lower the overall vapour pressure of the resulting solution compared with the pure liquid. A lower vapour pressure means that the solution has to be heated more than the pure liquid to make its molecules vaporise. It is an effect of the dilution of the solvent in the presence of a solute.
How will show that the process of evaporation depends on the nature of the liquid?
By the measurement of the pressure vapour at a given temperature; this value is different from liquid to liquid.
When smelling a liquid?
When this liquid has a great vapour pressure.
What factors affect the vapour pressure of a liquid?
Vapor pressure or equilibrium vapor pressure are the pressure of a vapor in thermodynamic equilibrium with its condensed phases in a closed bottle. All liquids and solids have a tendency to evaporate into a gaseous form, and all gases have a tendency to condense back to their liquid or solid form.The equilibrium vapour pressure is an indication of a liquid's evaporation rate. It relates to the tendency of particles to escape from the liquid (or a solid). A substance with a high vapour pressure at normal temperatures is often referred to as volatile
What is equilibrium vapor pressure?
It is vapor molecules in equilibrium with a liquid in a closed system exert a pressure proportional to the concentration of molecules in the vapor state.
What will be happen if liquid other than water are used in variation of pressure with depth?
it depends on the vapour pressure of the liquid
Why the relative lowering of vapour pressure is independent of temperature?
Relative lowering of vapour pressure is function of pressure of pure liquid and pressure of solutions when you increase temperature both the values increase and compensate the increase value, According to the Raoult's law, Psolvent = Xsolvent Po where Psolvent is the vapour pressure of the liquid solution, Xsolvent is its mole fraction in the solution and Po is the pure vapour pressure.
Why relative lowering of vapour pressure is independent of temperature?
Relative lowering of vapour pressure is function of pressure of pure liquid and pressure of solutions when you increase temperature both the values increase and compensate the increase value, According to the Raoult's law, Psolvent = Xsolvent Po where Psolvent is the vapour pressure of the liquid solution, Xsolvent is its mole fraction in the solution and Po is the pure vapour pressure.
What is the temperature at boiling point?
.The temperature at boiling point depend up on the vapour pressure. For example water boils at 100 degrees in atmospheric pressure ie, at 1 bar. But same water can boil at 40 degree celcius at -0.9 bar. That is , at reduced pressure a liquid boils at reduced temperature.So the temperature at boiling point depend up on the vapour pressure .
Why evapourate at a low pressure?
Reducing the air pressure allows the molecules to escape
What kind of pressure of a liquid is the pressure exerted at equilibrium and is dependent on temperature only?
Vapour pressure ; yes
What is vapour binding?
when pressure on the suction side of the pump drop below the vapour pressure of the liquid, vapour forms. It's caused because of insufficient suction head, high suction lift, excessive friction head, or high liquid temperature.
Vapor pressure results from?
pressure of gas over its liquid equilibrium
