IB Chemistry Topic R2.3.6 Quantifying Equilibrium Concentrations Revision Notes (HL)

IB Chemistry Topic R2.3.6 Quantifying Equilibrium Concentrations Revision Notes (HL) | RevisionDojo

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Equilibrium Calculations in Chemistry

As discussed previously, the equilibrium constant ($ K $) provides a numerical measure of the balance between reactants and products at equilibrium.
For a general reaction: $$
aA + bB \rightleftharpoons cC + dD
$$
The equilibrium constant expression is: $$
K = \frac{[C]^c [D]^d}{[A]^a [B]^b}
$$ Here:
1. $[\dots]$ represents the equilibrium concentration of each species.
2. The exponents correspond to the stoichiometric coefficients in the balanced equation.

Step-by-Step: Calculating Equilibrium Concentrations

To calculate equilibrium concentrations, follow these steps:

Write the $ K $ Expression:
1. Start by writing the equilibrium constant expression for the reaction.
Define Initial and Equilibrium Concentrations:
1. Use an ICE (Initial, Change, Equilibrium) table to organize the data.

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Equilibrium Calculations in Chemistry

As discussed previously, the equilibrium constant ($ K $) provides a numerical measure of the balance between reactants and products at equilibrium.
For a general reaction: $$
aA + bB \rightleftharpoons cC + dD
$$
The equilibrium constant expression is: $$
K = \frac{[C]^c [D]^d}{[A]^a [B]^b}
$$ Here:
1. $[\dots]$ represents the equilibrium concentration of each species.
2. The exponents correspond to the stoichiometric coefficients in the balanced equation.

Step-by-Step: Calculating Equilibrium Concentrations

To calculate equilibrium concentrations, follow these steps:

Write the $ K $ Expression:
1. Start by writing the equilibrium constant expression for the reaction.
Define Initial and Equilibrium Concentrations:
1. Use an ICE (Initial, Change, Equilibrium) table to organize the data.

Definition

Paywall

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Note

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Tip

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Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

IB Chemistry R2.3.6 Quantifying Equilibrium Concentrations Notes

Structure 1. Models of the particulate nature of matter5 subtopics

Structure 2. Models of bonding and structure4 subtopics

Structure 3. Classification of matter2 subtopics

Reactivity 1. What drives chemical reactions?4 subtopics

Reactivity 2. How much, how fast and how far?3 subtopics

Reactivity 3. What are the mechanisms of chemical change?4 subtopics

Equilibrium Calculations in Chemistry

Step-by-Step: Calculating Equilibrium Concentrations

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Equilibrium Calculations in Chemistry

Step-by-Step: Calculating Equilibrium Concentrations

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