Formula Used:
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Definition: This calculator determines the rate constant for the first step in a two-step first order irreversible reaction series, using parameters from a zero order reaction.
Purpose: It helps chemical engineers and researchers analyze reaction kinetics in complex multi-step reactions.
The calculator uses the formula:
Where:
Explanation: The formula calculates the first order rate constant by considering the consumption of reactant through both zero order reaction and intermediate formation.
Details: Accurate determination of rate constants is crucial for reactor design, process optimization, and understanding reaction mechanisms.
Tips: Enter the time interval, initial concentration, zero order rate constant, and intermediate concentration. All values must be positive (except intermediate which can be zero).
Q1: What is a first order reaction?
A: A reaction where the rate depends linearly on the concentration of one reactant.
Q2: What is a zero order reaction?
A: A reaction where the rate is independent of the reactant concentration.
Q3: When would I use this calculation?
A: When analyzing complex reactions with both zero and first order steps in series.
Q4: What units should I use?
A: Use seconds for time, mol/m³ for concentrations, and consistent units for rate constants.
Q5: What if I get an error?
A: Check that denominator (CA0-(k0*Δt)-CR) is positive and all inputs are valid.