The Equilibrium Law (VCE SSCE Chemistry): Quizzes

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The Equilibrium Law
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What defines a homogeneous chemical system?

All species in same physical state

What do coefficients from the balanced equation become in the equilibrium expression?

Powers (indices) of concentrations

What is the relationship between QQ and KK when a system is at equilibrium?

Q=KQ = K

What is the only factor that changes the value of KK for a given reaction?

Temperature

In an equilibrium expression, where are product concentrations placed?

Numerator (top)

For N2O4(g)⇌2NO2(g)\text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g), what is KK?

K=[NO2]2[N2O4]K = \frac{[\text{NO}_2]^2}{[\text{N}_2\text{O}_4]}

For K=[NH3]2[N2][H2]3K = \frac{[\text{NH}_3]^2}{[\text{N}_2][\text{H}_2]^3}, what are the units?

M−2\text{M}^{-2}

If Q<KQ < K, which direction does the reaction shift?

Right toward products

If Q>KQ > K, which direction does the reaction shift?

Left toward reactants

What does it mean when Q=KQ = K for a reaction system?

System is at equilibrium

Explore VCE SSCE Chemistry Revision Notes by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

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Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Flashcards by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

Explore VCE SSCE Chemistry Exam Questions by Topics

Dynamic Equilibrium

The Equilibrium Law

Calculations Involving Equilibrium

Le Châtelier’s Principle

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