Degree of Dissociation Formula:
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Definition: The degree of dissociation (α) represents the fraction of reactant molecules that dissociate into products at equilibrium.
Purpose: This calculator determines the extent of dissociation for reactions where one molecule dissociates into two particles, considering equilibrium pressure.
The calculator uses the formula:
Where:
Explanation: The formula calculates how much of the original substance has dissociated at equilibrium, considering both the equilibrium constant and the system pressure.
Details: Understanding dissociation is crucial for predicting reaction yields, equilibrium positions, and designing chemical processes.
Tips: Enter the equilibrium constant (Kp) in mol/m³ and absolute pressure in Pascals. Both values must be > 0.
Q1: What does a degree of dissociation of 0.5 mean?
A: It means 50% of the original molecules have dissociated into products at equilibrium.
Q2: How does pressure affect dissociation?
A: For reactions producing more gas molecules (like A → 2B), increased pressure typically decreases dissociation.
Q3: What's the range of possible values for α?
A: The degree of dissociation ranges from 0 (no dissociation) to 1 (complete dissociation).
Q4: Can this be used for other types of reactions?
A: This specific formula applies to 1→2 molecular dissociation. Different stoichiometry requires modified formulas.
Q5: Where can I find Kp values?
A: Kp values are typically found in chemical equilibrium tables or determined experimentally.