Unit 13 Kinetics & Equilibrium

What part of a potential energy diagram changes when a catalyst is added

• activation energy

• potential energy of products

• poteintal energy of reactants

• $\Delta H$ heat of reaction

What are the two factors to look for when determining if the reaction is at equilibrium?

• Forward reaction rate is faster than the reverse and concentrations are equal
• Forward and reverse reaction rates are equal and concentration is conctant
• Forward and revers reaction rates are equal and concentration is equal
• Forward reaction rate is faster than the reverse and concentration is equal

Tags

NGSS.HS-PS1-6

Identify the incorrect statement about achieving equilibrium.

• achieved when product and reactant concentrations are equal

• achieved when forward and reverse reaction rates are same

• achieved when concentration of reactants is stable/constant

• achieved when concentration ratio of reactants to products becomes stable, thus fixing the equilibrium constant (equilibrium position)

Tags

NGSS.HS-PS1-6

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

At what time the reaction reached equilibrium?

• t₁
• t₂
• t₃
• t₄

Tags

NGSS.HS-PS1-6

In which of the following systems is entropy increasing?

• Putting together a puzzle
• Putting books on a shelf
• Breaking a plate
• Filling a jar of salt

Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

Tags

NGSS.HS-PS1-4

If they energy required to break the bonds is greater than the energy given out by making new bonds the reaction is

• Exothermic
• Endothermic
• Neutralisation

What is the PE of the products?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

Tags

NGSS.HS-PS1-4

What is the activation energy?

• 40 kJ
• 20 kJ
• 100 kJ
• 60 kJ

Tags

NGSS.HS-PS1-4