1. What is Net Partial Pressure in Constant Volume Batch Reactor?

Definition: Net partial pressure is the difference between initial and final partial pressures in a constant volume batch reactor.

Purpose: It helps chemical engineers and researchers understand pressure changes during reactions in closed systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \Delta p \) — Net partial pressure (Pascal)
• \( r \) — Reaction rate (mol/m³·s)
• \( [R] \) — Universal gas constant (8.314 J/mol·K)
• \( T \) — Temperature (Kelvin)
• \( \Delta t \) — Time interval (seconds)

Explanation: The formula calculates pressure change based on reaction kinetics and ideal gas law principles.

3. Importance of Net Partial Pressure Calculation

Details: Accurate pressure calculations are crucial for reactor design, safety assessments, and understanding reaction thermodynamics.

4. Using the Calculator

Tips: Enter the reaction rate, temperature in Kelvin, and time interval in seconds. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the universal gas constant [R]?
A: It's a physical constant (8.314 J/mol·K) that appears in the ideal gas law and related equations.

Q2: Why is temperature in Kelvin?
A: Kelvin is the absolute temperature scale required for thermodynamic calculations.

Q3: How do I determine the reaction rate?
A: Reaction rate can be determined experimentally or from kinetic studies of the specific reaction.

Q4: Does this account for non-ideal gas behavior?
A: No, this calculator assumes ideal gas behavior. For real gases, additional corrections may be needed.

Q5: What if my reaction has multiple components?
A: This calculates total pressure change. For individual components, you would need partial pressure data for each species.