Partial Pressure Formula:
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Definition: This calculator determines the partial pressure of a reactant in a constant volume batch reactor based on initial conditions and stoichiometric coefficients.
Purpose: It helps chemical engineers and researchers analyze reaction kinetics and equilibrium in closed systems.
The calculator uses the formula:
Where:
Explanation: The formula accounts for how the reactant's partial pressure changes as the reaction progresses and total pressure changes.
Details: Accurate partial pressure calculations are essential for determining reaction rates, equilibrium constants, and gas-phase behavior in reactors.
Tips: Enter all required values in Pascals (Pa). The net stoichiometric coefficient (Δn) can be positive, negative, or zero (but cannot be zero when calculating).
Q1: What is a constant volume batch reactor?
A: A closed system where reactions occur at fixed volume, causing pressure changes as the reaction progresses.
Q2: How do I determine the net stoichiometric coefficient?
A: Subtract the sum of reactant coefficients from the sum of product coefficients in the balanced equation.
Q3: What if Δn equals zero?
A: The calculation simplifies since there's no pressure change (π = π0) in this case.
Q4: Can I use different pressure units?
A: Yes, but all pressure inputs must use the same units for consistent results.
Q5: How does temperature affect this calculation?
A: Temperature changes would require additional calculations using the ideal gas law; this calculator assumes constant temperature.