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Definition: Equilibrium Vapour Density is the density of a vapour substance during the stages of reaction at equilibrium.
Purpose: It helps chemists and chemical engineers understand the state of a chemical reaction at equilibrium and predict product formation.
The calculator uses the formula:
Where:
Explanation: The initial vapour density is multiplied by the initial moles and then divided by the total moles at equilibrium to determine the equilibrium vapour density.
Details: Calculating vapour density at equilibrium is crucial for understanding reaction progress, determining molecular weights, and predicting reaction yields.
Tips: Enter the initial vapour density, initial number of moles, and total moles at equilibrium. All values must be > 0.
Q1: What is vapour density?
A: Vapour density is the density of a vapour relative to that of hydrogen under the same conditions.
Q2: Why is equilibrium vapour density important?
A: It helps determine the extent of reaction and the composition of the equilibrium mixture.
Q3: How do I measure initial vapour density?
A: Initial vapour density can be measured experimentally or calculated from known properties of the reactants.
Q4: What affects the equilibrium vapour density?
A: Temperature, pressure, and the nature of the chemical reaction all affect the equilibrium vapour density.
Q5: Can this calculator be used for any chemical reaction?
A: It's primarily designed for gas-phase reactions where vapour density measurements are applicable.