Concentration Formula:
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Definition: This calculator determines the concentration of product C formed in a set of three parallel reactions from reactant A over time.
Purpose: It helps chemists and chemical engineers predict product distribution in parallel reaction systems.
The calculator uses the formula:
Where:
Explanation: The formula accounts for the competition between parallel reactions and their relative rates.
Details: Understanding product distribution in parallel reactions is crucial for reaction optimization, selectivity control, and process design.
Tips: Enter all rate constants (default values provided), initial concentration of A, and reaction time. All values must be ≥ 0.
Q1: What are parallel reactions?
A: Parallel reactions occur when a reactant can form different products through independent reaction pathways simultaneously.
Q2: How do I determine the rate constants?
A: Rate constants are typically determined experimentally through kinetic studies of the individual reactions.
Q3: What if one rate constant is much larger than others?
A: The reaction with the largest rate constant will dominate, producing more of its corresponding product.
Q4: Does this formula work for any number of parallel reactions?
A: The formula can be extended to any number of parallel reactions by summing all rate constants in the denominator.
Q5: What are typical units for these calculations?
A: Rate constants are typically in 1/s, concentrations in mol/m³, and time in seconds, but consistent units must be used throughout.