The liquid that has the highest rate of evaporation is___
The liquid that has the highest rate of evaporation is___
The correct option is B Nail polish remover
Explanation for the correct option
(B) Nail polish remover
Evaporation
A process where liquid changes into a gas below its boiling point is called as evaporation. While evaporating liquids molecules absorb energy from the surrounding, with increase in kinetic energy they escape from the surface. Evaporation of a liquid depends upon several factors.
- Inter-molecular force- Rate of evaporation is fast for liquids with weaker inter-molecular forces.
- Temperature : Higher temperature in the surrounding promotes the rate of evaporation by increasing kinetic energy of molecules.
- Surface Area : Surface area directly impacts the rate of evaporation because higher the surface area more molecules escape to the surroundings.
- Composition of environment like humidity and lower wind speed decrease rate of evaporation.
Option B - Nail polish remover is correct. Nail polish remover is made up of acetone. It has lower boiling point and also less inter-molecular force of attraction.
Explanation for the incorrect options
(A) Petrol - Petroleum products evaporate at a logarithmic rate with respect to time. As the composition and properties will change because different components evaporate at different rates
(C) Water has high boiling point, that is 100o C.
(D) Alcohol does not evaporate at room temperature. it has boiling point of 78o C.
Nail polish remover
Explanation for the correct option
(B) Nail polish remover
Evaporation
A process where liquid changes into a gas below its boiling point is called as evaporation. While evaporating liquids molecules absorb energy from the surrounding, with increase in kinetic energy they escape from the surface. Evaporation of a liquid depends upon several factors.
- Inter-molecular force- Rate of evaporation is fast for liquids with weaker inter-molecular forces.
- Temperature : Higher temperature in the surrounding promotes the rate of evaporation by increasing kinetic energy of molecules.
- Surface Area : Surface area directly impacts the rate of evaporation because higher the surface area more molecules escape to the surroundings.
- Composition of environment like humidity and lower wind speed decrease rate of evaporation.
Option B - Nail polish remover is correct. Nail polish remover is made up of acetone. It has lower boiling point and also less inter-molecular force of attraction.
Explanation for the incorrect options
(A) Petrol - Petroleum products evaporate at a logarithmic rate with respect to time. As the composition and properties will change because different components evaporate at different rates
(C) Water has high boiling point, that is 100o C.
(D) Alcohol does not evaporate at room temperature. it has boiling point of 78o C.
