what is mean by reflux ratio?
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Answer / u k pardeshi
This term is used for distilation operation.Reflx ratio is
the ratio of two quantities i.e. distilled material being
removed out of system to distilled material but being
recycled to the system again. This is done mainly for
imrpoving purity of distilled material.
Is This Answer Correct ? | 15 Yes | 3 No |
Answer / atul
The reflux ratio is the ratio of the quantity of distilled material returns to the column to quantity of distillate.
One can operate the distillation column without calculating reflux ratio, but the main purpose of it is to improve the efficiency of the distillate.
Is This Answer Correct ? | 5 Yes | 2 No |
Answer / dara charandeep
reflux ratio is not only
the ratio of reflux to
distillate...it is for both
for purity of distill
product and to maintain
temperature in a column..
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / vasu g
reflux ratio is the ratio of reflux to the desired product
Is This Answer Correct ? | 1 Yes | 4 No |
Question 90 - In the calculation of the growth of bacteria, absorbance, A in spectrophotometry is used. According to Beer-Lambert Law, A = e x l x c where A is the absorbance of the solution (no unit), l is the distance of light travels through the solution (in cm), e is the molar absorptivity or the molar extinction coefficient [ in L / (mol.cm) ]. For a particular solute and fixed path length : As / Ao = Cs / Co where Ao is the observed signal for a known concentration Co, and As is the observed signal for a sample concentration Cs. (a) For a cell concentration of 560 cells / mL, a spectrophotometre gives an absorbance reading of 1.0. A mixture of concentration 3600000 cells / mL can be diluted in several operations, with each operation having a dilution of 1:20. How many dilutions should be made so that the concentration of this mixture can be calculated within a range of A = 0.0 to 1.0. (b) In another experiment, a sample tube of 1 cm in width is used. Let A = 0.06 and e = 0.0012 ml / (cell.cm). Find the cell concentration of the sample.
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