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Definition: This calculator determines the remaining concentration of reactant A in a first-order consecutive reaction after a given time period.
Purpose: It helps chemists and chemical engineers understand reaction kinetics and predict reactant concentrations over time.
The calculator uses the formula:
Where:
Explanation: The formula describes the exponential decay of reactant A in a first-order reaction.
Details: Understanding reactant concentrations over time is crucial for reaction optimization, process control, and safety considerations in chemical processes.
Tips: Enter the initial concentration of A, the reaction rate constant, and the time period. All values must be positive (time 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: How do I determine the rate constant?
A: The rate constant is typically determined experimentally from kinetic studies.
Q3: What units should I use?
A: Concentration in mol/m³, rate constant in 1/s, and time in seconds for consistent results.
Q4: Can this be used for other reaction orders?
A: No, this calculator is specific for first-order reactions.
Q5: What does the exponential term represent?
A: It represents the fraction of reactant A that remains unreacted after time t.