Determine the length of tube that is necessary

Reference no: EM131310769

Air passes through a naphthalene tube, that has an inside diameter of 2.5 cm, flowing at a bulk velocity of 15 m/s. The air is at 283 K and an average pressure of 1:013 × 10⁵ Pa.

Assuming that the change in pressure along the tube is negligible and that the naphthalene surface is at 283 K, determine the length of tube that is necessary to produce a naphthalene concentration in the exiting gas stream of 4:75 × 10^-4 mol/m³.

At 283 K, naphthalene has a vapor pressure of 3 Pa and a diffusivity in air of 5:4 × 10^-6 m²/s.

Reference no: EM131310769

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