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How to estimate the fraction extracted by the process of staged counter current process of extraction?

How to estimate the fraction extracted by the process of staged counter current process of extraction? Correct Answer p = \(\frac{Q_E C_{En}}{Q_R C_{Rn+1}}\)

The final product obtained at the end of the staged counter current extraction process is the product of flow of extract in the stages to the concentration of the extract at nth stage divided by the product of the flow of raffinate to the nth stage of concentration of the raffinate.

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Match the column. a. Detailed estimate 1. Estimate of additional works during the process b. Supplementary estimate 2. Prepared for approx. rates initially c. Revised estimate 3. Includes details and cost of everything d. Rough estimate 4. Prepared when the costs exceed more than 5%
What is the correct sequence of preparing an estimate? 1. Detailed estimate 2. Approximate estimate 3. Supplementary estimate 4. Revised estimate
What are the basic assumptions required for obtaining analytical solution for the process of extraction based on the staged counter current?
What will be the equation for the solute material balance over the second stage of the staged counter current process of extraction?
How the feed stream does enters the nth stage of the staged counter current extraction?