Perbincangan:Kejuruteraan kimia

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apa itu kejuruteraan kimia

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An entrance section of process piping is fouled with calcium carbonate scale. Specifically, the inner surface of the pipe is coated with a 0.1 cm film of solid calcium carbonate (species A), which is sparingly soluble in water. The length of pipe containing the calcium carbonate scale is 1 m, and the inner diameter of the pipe is 2 cm. In an attempt to dissolve the scale from the pipe surface, “clean” water containing no soluble calcium carbonate flows through the pipe at volumetric flow rate of 314 cm3/s and temperature 293 K. Determine the time (in hours) it will be take for the calcium carbonate coating to completely dissolve from the inner surface of the tube, assuming that bulk concentration of solute A in the liquid stream is essentially zero throughout the 1 m length of the scaled pipe section. Molecular weight of solute A = 100 kg/kgmole Density of solute A = 2.7 x 103 kg/m3 Diffusivity of solute A in water = 1.2 x 10-9 m2/s Solubility of solute A in water = 0.14 mole/m3 – komentar Wikipedia:Tandatangan oleh 183.171.173.115 (bs).

Maaf, tiada bantuan membuat kerja rumah di sini. ...Aurora... (b) 07:41, 10 Jun 2013 (UTC)[balas]