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A nonionic organic molecule A is dissolving and diffusing into a pure carrier solvent B , which is flowing with a certain velocity across a
A nonionic organic molecule A is dissolving and diffusing into a pure carrier
solvent B which is flowing with a certain velocity across a flat surface of pure A The
dissolution and transfer of A is driven by this fluid flow. The flat surface is cm long x
direction The height is represented here by the ydirection. The kinematic viscosity of B is e
cms the diffusivity of A in B is e cms the solubility of A in B surface value is
gcm and the molar mass of A is gmol The flow rate across the surface is Lmin and
the crosssectional area of this flow is cm by cm
a Write out the equation for the Schmidt number and solve. Is Sc above or below
b Write out the Sherwood number equation and state the known and unknown variables
needed to calculate Sh
c Write out the equation for the Reynolds number. There are some options for the length
variable choose the direction across the flat surface. State the known and unknown variables
needed to calculate ReL and Rex You will need to include a value for vinfinity and cAinfinity.
d Write out the Blasius version of the equation for Sherwood number as a function of other
dimensionless numbers, at an arbitrary point x along the flat surface x at the starting edge
of the point, x increasing in the direction of flow What is the Sherwood number at x cm
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