1. What is Molar Feed Rate of Reactant?

Definition: The Molar Feed Rate of Reactant (F_Ao) gives the number of moles of reactant A being fed to the reactor per unit time.

Purpose: This calculation is essential in chemical reaction engineering to determine the initial reactant flow needed for a given conversion.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( F_{Ao} \) — Molar feed rate of reactant (mol/s)
• \( F_A \) — Molar flow rate of unreacted reactant (mol/s)
• \( X_A \) — Reactant conversion (decimal between 0 and 1)

Explanation: The formula calculates the initial feed rate based on the unreacted flow rate and the conversion achieved in the reactor.

3. Importance of This Calculation

Details: Accurate feed rate calculations are crucial for reactor design, process optimization, and ensuring proper stoichiometric ratios in chemical reactions.

4. Using the Calculator

Tips: Enter the molar flow rate of unreacted reactant in mol/s and the conversion as a decimal between 0 and 1 (e.g., 0.7 for 70% conversion).

5. Frequently Asked Questions (FAQ)

Q1: What if my conversion is 100% (X_A = 1)?
A: The formula becomes undefined at 100% conversion. In practice, 100% conversion is rarely achieved in real reactors.

Q2: What units should I use?
A: The calculator uses mol/s for flow rates, but any consistent molar time unit can be used as long as all inputs use the same unit.

Q3: How is this different from conversion rate?
A: Conversion (X_A) is the fraction of reactant converted, while feed rate (F_Ao) is the initial molar flow of reactant.

Q4: Can this be used for multiple reactants?
A: This calculation is for a single reactant. For multiple reactants, stoichiometric ratios must be considered.

Q5: What about changing reaction conditions?
A: This is a basic calculation. Temperature, pressure, and reaction kinetics would affect actual reactor design.