Equilibrium Practice

This symbol indicates that a reaction is _____

• reversible

• irreversible

Around what time does the reaction reach equilibrium?

• 25 min

• 70 min

• 45 min

• 80 min

Tags

NGSS.HS-PS1-5

Changes in pressure will only affect substances that are in the ______ state.

• solid

• gas

• liquid

What are the two factors that help determine that equilibrium is reached?

• Forward reaction rate is faster than the reverse and the concentrations are equal

• Forward and reverse reaction rates are equal and concentrations are equal

• Forward and reverse reaction rates are equal and concentrations are constant

Tags

NGSS.HS-PS1-6

When the rate of the forward reaction is equal to the rate of the backward reaction, the system is said to be in _____

• Chemical Balance

• Chemical Constant

• Chemical Reaction

• Chemical Equilibrium

Tags

NGSS.HS-PS1-5

Which of the two graphs reaches equilibrium?

• Neither

• The left

• Both

• The right

SO₂Cl₂(g) ⇌ SO₂(g) + Cl₂(g)

Write the equilibrium constant expression in terms of concentrations

e

a

[SO₂]+[Cl₂]

[SO₂][Cl₂]

[Cl₂]

[SO₂Cl₂]

[SO₂]

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-6

CaCO₃(s)     ⇌    CaO(s) + CO₂(g)

Write the equilibrium constant expression in terms of concentrations

c

f

1

[CaCO₃]

[CaO][CO₂]

[CaO]+[CO₂]

[CO₂]

[CaO]

Co(s) + 2 H⁺(aq) ⇌ Co²⁺(aq) + H₂(g)

Write the equilibrium constant expression in terms of concentrations

f

c

[H⁺]²

[Co²⁺][H₂]

[Co][H⁺]

[H₂]

[Co]

[H⁺]

[Co²⁺]

[Co][H⁺]²

Tags

NGSS.HS-PS1-7

product

• condition of continuous, random movement of particles but no overall change in concentration of materials
• a measurement of how much solute exists within a certain volume of solvent or solution
• a substance that forms in a chemical reaction
• the reaction that forms products from reactants