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Which of the following is defined as the ratio of moles of solute in stationary phase to the moles of solute in the mobile phase?

Correct Answer: Retention factor
Retention factor is defined as the ratio of moles of solute in stationary phase to the moles of solute in the mobile phase. It is used for determining the migration rates of solutes in the column.

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2.hr. The equilibrium data is represented by Y = 3X2, where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is

How is the molar concentration of solute in stationary phase related to molar concentration of solute in the mobile phase?

Estimate the interfacial solute concentration in the two liquids when the solute concentration is 45000 kg-moles/m3, interfacial solute concentration in liquid is 40000 kg-moles/m3, diffusivity is 2.5 × 10-11 m2/s and the length of the tube is 5m3 and the partition coefficient is 0.25.

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in the reactor is only 15%, a recycle stream is used and in order to avoid build-up of inerts, a purge stream is withdrawn.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?

A mobile was dropped from a balcony if the mass of the mobile phone is 0.5kg and the mobile phone was dropped from a height of 100m, g = 10m/s2. So what is the potential energy of mobile phone?

The solute, while moving in the column is always in equilibrium with both the stationary phase and the mobile phase.

Arrange the following demographic transition theory given by Blackur (ascending order)
1. Declining phase with low mortality, lower fertility
2. Low stationary phases with low fertility and low mortality
3. Early expanding phase marked by high fertility
4. High stationary phase marked by high fertility and mortality

A solution contains 0.3 moles of solute A, 0.2 moles of B and 0.5 moles of C. What will be the mole fraction of A in the mixture?

The stock of stationary on 1st January 2002 is Rs. 300, payment for stationary during the year is 2002 Rs. 1,080 and stock of stationary on 31st December 2002 is Rs. 50. What will be the amount shown in income and expenditure account for the year ending 31st December, 2002?

A reactor is supplied with 5 moles of C4H10, and it undergoes following reactions C4H10 + 4H2O -> 4CO + 9H2 and C4H10 + 6.5O2 -> 4CO2 + 5H2O, if 8 moles of CO2 was produced and 2 moles of C4H10 remains unreacted, what are the number of moles of water produced?