Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.

Solution (By Examveda Team)

The correct answer is (A) Chemical properties. Here's why:

Let's break down what influences mass transfer:

* Mass Transfer: Think of it like sugar dissolving in water. Mass transfer is the movement of a substance from one location (like a solid sugar cube) to another (the water).

* Physical Properties: These are things like density, viscosity, and diffusivity. These properties *directly* affect how easily a substance can move and dissolve. Imagine trying to stir honey versus water; the viscosity makes a big difference in how quickly things mix.

* Degree of Turbulence: Turbulence means more mixing. More mixing means the substance is carried away faster from the interface, and new material is brought in to be dissolved. More turbulence leads to a higher mass transfer rate.

* Interfacial Area: The interfacial area is the area of contact between the two phases (e.g., the surface area of the sugar cube in contact with the water). A larger interfacial area means more opportunities for the substance to dissolve or transfer.

* Chemical Properties: While chemical properties *can* indirectly influence mass transfer (e.g., solubility if a chemical reaction is occurring), the *rate* of mass transfer itself is not directly determined by the chemical properties of the phases in the absence of a chemical reaction. The other options (physical properties, turbulence, and interfacial area) have a more *direct* impact on the speed at which mass transfer occurs.