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Definition: The rate constant for a second-order reaction is a proportionality constant that relates the reaction rate to the concentrations of the reactants.
Purpose: This calculator determines the rate constant for a second-order reaction in a batch reactor using reactant concentrations and space time.
The calculator uses the formula:
Where:
Explanation: The formula calculates how quickly reactants are being consumed in a second-order reaction based on concentration changes over time.
Details: Knowing the rate constant helps in reactor design, process optimization, and predicting reaction behavior under different conditions.
Tips: Enter the initial reactant concentration, current reactant concentration, and space time. All values must be > 0.
Q1: What is a second-order reaction?
A: A reaction whose rate depends on the concentration of one reactant raised to the second power or two reactants each raised to the first power.
Q2: What are typical units for second-order rate constants?
A: For reactions in solution, typical units are m³/(mol·s) or L/(mol·s).
Q3: How does temperature affect the rate constant?
A: Rate constants typically increase with temperature according to the Arrhenius equation.
Q4: What is space time in a batch reactor?
A: It's the time required to process one reactor volume of feed under specified conditions.
Q5: Can this calculator be used for flow reactors?
A: This specific formula is for batch reactors. Different equations apply for continuous flow reactors.