How the feed stream does enters the nth stage of the staged counter current extraction?

How the feed stream does enters the nth stage of the staged counter current extraction? Correct Answer Extracting solvent enters 1st stage

The Raffinate phase is collected from the 1st stage while the extract phase is collected from the nth stage. Using the method of staged counter current process of extraction, the concentration driving force is maintained more or less uniform in all the stages of extraction comprising the cascade.
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Five plays K, L, M, N and O are to be staged from Monday to Friday of a week. On each day, only one play will be staged. N or O should not be either the first or last to be staged. O should be immediately followed by M. L should be staged immediately after N. One play is staged between K and L. Which is the second play to be staged ?
What will be the extraction factor of the process of extraction for the first stage of the extraction under the staged counter current process of extraction?
The fresh feed to an ammonia synthesis reactor contains nitrogen, hydrogen and 2.0 mole per cent inerts. The molar ratio of H2:N2 is 3:1. The product stream consists of pure ammonia. Since conversion in the reactor is only 15%, a recycle stream is used and in order to avoid build-up of inerts, a purge stream is withdrawn. The rate of purge stream is adjusted to keep inert concentration in the recycle stream at 8 mole per cent. For a fresh feed rate of 100 moles/hr. Note that recycle stream contains only nitrogen, hydrogen and inerts. The N2:H2 ratio of 1:3 is maintained in every process stream, and calculate the moles of nitrogen entering the reactor and in the recycle stream?
The fresh feed to an ammonia synthesis reactor contains nitrogen, hydrogen and 2.0 mole per cent inerts. The molar ratio of H2:N2 is 3:1. The product stream consists of pure ammonia. Since conversion in the reactor is only 15%, a recycle stream is used and in order to avoid build-up of inerts, a purge stream is withdrawn. The rate of purge stream is adjusted to keep inert concentration in the recycle stream at 8 mole per cent. For a fresh feed rate of 100 moles/hr. Note that recycle stream contains only nitrogen, hydrogen and inerts. The N2:H2 ratio of 1:3 is maintained in every process stream, and calculate the number of moles, moles of inerts and moles of hydrogen in the recycle stream?
What will be the concentration of the raffinate at the nth stage of the extraction process in the staged counter current of extraction?
The fresh feed to an ammonia synthesis reactor contains nitrogen, hydrogen and 2.0 mole per cent inerts. The molar ratio of H2:N2 is 3:1. The product stream consists of pure ammonia. Since conversion in the reactor is only 15%, a recycle stream is used and in order to avoid build-up of inerts, a purge stream is withdrawn. The rate of purge stream is adjusted to keep inert concentration in the recycle stream at 8 mole per cent. For a fresh feed rate of 100 moles/hr. Note that recycle stream contains only nitrogen, hydrogen and inerts. The N2:H2 ratio of 1:3 is maintained in every process stream. Calculate the moles of ammonia produced.
What will be the equation for the solute material balance over the second stage of the staged counter current process of extraction?
What are the basic assumptions required for obtaining analytical solution for the process of extraction based on the staged counter current?
How to estimate the fraction extracted by the process of staged counter current process of extraction?
Statement 1: In counter-current extraction, equilibrium is reached at every stage. Statement 2: Right angled triangle method also called a difference point method is used to calculate the ideal number of stages for extraction.