All of the following properties of a liquid increase with an increase in strengt

Question

All of the following properties of a liquid increase with an increase in strength of intermolecular forces with the exception of. boiling point enthalpy of vaporization viscosity vapor pressure all of them increase the rate of disappearance of N_2O_5 (g) at a certain temperature is 0.016 mol^-1 min^-1. What is the rate of formation of NO_2 (g) in mol L^-1 min^-1 at the same temperature? 2 N_2O_5 (g) rightarrow 4 NO_2 (g) + O_2 (g) A reaction has a rate law of Rate = k[A]^2[B). Which of the following statements is most probably true? Doubling the concentration of A will double the rate of the reaction. Tripling [A] will affect the rate twice as much as tripling [B]. The reaction mechanism involves the formation of B_2 at some stage. Tripling [B] will affect the rate twice as much as tripling [A]. If the disappearance of the spheres in this diagram is a first order reaction, how much time is required to go from the second box to the third box?

Explanation / Answer

Hi

1. Boiling of a substance begins when the vapor pressure of liquid becomes equal to the surrounding pressure. But the vapor pressure of a substance is directly proportional to intermolecular forces. If intermolecular forces are strong, more energy will be required to overcome intermolecular forces, so boiling point and vapor presure increases as intermolecular forces increases.

Enthalpy of vaporization is also directly proportional to intermolecular forces, since more energy is required to overcome the interaction between molecules.

Viscosity increases as intermolecular force increaes. Since, the stronger intermolecular force menas, more friction betweeen layers of liquid and hence more viscosity.

Thank you

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