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maxonik [38]
2 years ago
9

hi:) evaporation is the process by which liquids changes to gas at temperatures lower than boiling point. But why can’t liquids

evaporate at their boiling point? Is that because liquids will boil instead of evaporate? Anyone able to help I’m rlly confused.
Chemistry
2 answers:
Sindrei [870]2 years ago
6 0

Answer:

evaporation is the process by which liquids changes to gas at temperatures lower than boiling point. But why can’t liquids evaporate at their boiling point? Is that because liquids will boil instead of evaporate?

Evaporation only take place at a certain temperature or it is high at a particular temperature which makes it to be rapid then, when liquid is heated, at a temperature the vapor leaves and evaporates in gaseous form known as vapor to the atmosphere. Evaporation takes place below the temperature of boiling point and above it but the rapidity depends on the temperature, the higher the temperature the rapid the evaporation takes place

Explanation:

fiasKO [112]2 years ago
5 0

Answer: I’m not sure if this will help, but once it reaches its boiling point and actually makes the state of matter change from a liquid to gas, that is referred to as vaporization. Evaporation occurs below the boiling point and vaporization occurs at or above it.

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According to Graham's Law of Diffusion,"the rates of diffusion of two gases are inversely proportional to the square root of their Molar masses or Densities at the same pressure and temperature".

                                     r₁ / r₂  =  \sqrt{M2 / M1}
Where,
            r₁  =  Rate of Helium

            r₂  =  Rate of Oxygen

            M₂  =  Molar mass of Oxygen  =  32 g/mol

            M₁  =  Molar mass of Fluorine  =  4 g/mol

Putting values,

                                           r₁ / r₂  =  \sqrt{32 / 4}

                                           r₁ / r₂  =  \sqrt{8}

                                           r₁ / r₂  =  2.82
Result:
            Helium gas effuses 2.82 times faster than Oxygen gas.
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