Reaction Rate Formula:
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Definition: This calculator computes the reaction rate for a second-order irreversible chemical reaction where the rate depends on the square of the reactant concentration.
Purpose: It helps chemists and chemical engineers determine how quickly reactants are being consumed in second-order reactions.
The calculator uses the formula:
Where:
Explanation: The reaction rate is directly proportional to the square of the reactant concentration and the rate constant.
Details: Accurate reaction rate calculations are essential for reactor design, process optimization, and safety assessments in chemical processes.
Tips: Enter the rate constant (default 0.002 m³/(mol·s)) and reactant concentration (default 1.1 mol/m³). All values must be > 0.
Q1: What defines a second-order reaction?
A: A reaction where the rate is proportional to the square of the concentration of one reactant or to the product of concentrations of two reactants.
Q2: How is the rate constant determined?
A: The rate constant is typically determined experimentally by measuring reaction rates at different concentrations.
Q3: What units does the rate constant have?
A: For second-order reactions, the rate constant has units of m³/(mol·s) in SI units.
Q4: Can this calculator be used for reversible reactions?
A: No, this calculator is specifically for irreversible second-order reactions with equal reactant concentrations.
Q5: What affects the reaction rate in real systems?
A: Temperature, pressure, catalysts, and other factors can significantly affect reaction rates beyond just concentration.