Number of Moles at Equilibrium given Extent of Reaction Calculator

Formula Used:

\[ n_{Equilibrium} = n_{initial} + (v_i \times \xi_{Reaction}) \]

Number of Moles at Equilibrium: moles

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1. What is Number of Moles at Equilibrium?

Definition: Number of Moles at Equilibrium are given when the liquid and vapour phase of the substance are in equilibrium.

Purpose: This calculator helps determine the amount of substance present at equilibrium in chemical reactions.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ n_{Equilibrium} = n_{initial} + (v_i \times \xi_{Reaction}) \]

Where:

\( n_{Equilibrium} \) — Number of Moles at Equilibrium (moles)
\( n_{initial} \) — Initial Number of Moles (moles)
\( v_i \) — Stoichiometric Coefficient for i-th Component
\( \xi_{Reaction} \) — Extent of Reaction (moles)

Explanation: The initial moles are adjusted by the product of the stoichiometric coefficient and the extent of reaction.

3. Importance of Equilibrium Moles Calculation

Details: Calculating equilibrium moles is crucial for understanding reaction progress, yield prediction, and chemical process design.

4. Using the Calculator

Tips: Enter the initial moles, stoichiometric coefficient (can be positive or negative), and extent of reaction (must be ≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the extent of reaction?
A: Extent of reaction measures the progress of a reaction and is defined as the degree to which a reaction has advanced.

Q2: How do I determine the stoichiometric coefficient?
A: It comes from the balanced chemical equation (positive for products, negative for reactants).

Q3: Can the equilibrium moles be less than initial moles?
A: Yes, if the stoichiometric coefficient is negative (for reactants).

Q4: What units are used in this calculation?
A: All quantities are in moles for consistency.

Q5: Does this work for multiple reactions?
A: This calculator handles one reaction component at a time.