Question: The mass transfer co - efficient for a solid sphere of radius ' a ' dissolving in a large volume of quiescent liquid, in which

The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which 'D' is the diffusivity of solute, is
D/a
D/2a
Proportional to D
Dependent on the Reynolds number

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