Mass Ratio Formula:
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Definition: The Mass Ratio of Solvent in Raffinate Phase is the ratio of mass of solvent in the raffinate phase to the mass of solute plus carrier liquid in the raffinate phase.
Purpose: This calculation is important in chemical engineering for liquid-liquid extraction processes where a ternary mixture is separated into different phases.
The calculator uses the formula:
Where:
Explanation: The mass fraction of solvent is divided by the sum of mass fractions of carrier liquid and solute to determine their relative mass ratio.
Details: This ratio helps in understanding the composition of the raffinate phase after separation and is crucial for designing and optimizing extraction processes.
Tips: Enter the mass fractions of solvent, carrier liquid, and solute in the raffinate phase. All values must be ≥ 0 and the denominator (xA + xC) must be > 0.
Q1: What is the raffinate phase?
A: In liquid-liquid extraction, the raffinate phase is the phase that remains after the solute has been extracted by the solvent.
Q2: What are typical values for these mass fractions?
A: Values depend on the specific system, but typically range between 0 and 1, with their sum in the raffinate phase being 1.
Q3: Why is this ratio important?
A: It helps quantify how much solvent remains in the raffinate phase relative to other components, which affects process efficiency.
Q4: Can the ratio be greater than 1?
A: Yes, if the mass of solvent in the raffinate phase is greater than the combined mass of carrier liquid and solute.
Q5: What if I get a division by zero error?
A: This occurs when both xA and xC are zero, which isn't physically meaningful as the raffinate phase must contain some mass.