Extent of Reaction Formula:
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Definition: Extent of Reaction measures the progress of a chemical reaction and is defined as the degree to which a reaction has advanced.
Purpose: It provides a quantitative measure of how far a reaction has proceeded, useful in chemical kinetics and reactor design.
The calculator uses the formula:
Where:
Explanation: The change in moles is divided by the stoichiometric coefficient to determine the extent of reaction.
Details: Knowing the extent of reaction helps in determining reaction yields, designing chemical reactors, and understanding reaction kinetics.
Tips: Enter the change in number of moles (Δn) and the stoichiometric coefficient (vi). The stoichiometric coefficient cannot be zero.
Q1: What does a negative extent of reaction mean?
A: A negative value indicates the reaction is proceeding in the reverse direction.
Q2: How is Δn calculated?
A: Δn is the difference between the moles of products and reactants (nproducts - nreactants).
Q3: What are typical values for stoichiometric coefficients?
A: These are whole numbers from the balanced chemical equation (e.g., 2 for H2 in 2H2 + O2 → 2H2O).
Q4: Can extent of reaction be greater than 1?
A: Yes, it depends on the amounts of reactants and the stoichiometry. It's not limited to 0-1 range.
Q5: How does this relate to reaction completion?
A: The maximum extent of reaction is determined by the limiting reactant's initial moles divided by its stoichiometric coefficient.