Energy Graphs and Formulas

What letter represents the  potential energy of the products?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What type of reaction is this?

• Endothermic
• Exothermic
• Spontaneous
• Catalyzed

Tags

NGSS.HS-PS1-4

Which of the following could this  energy diagram refer to?

• N₂(g) + O₂(g) → 2NO(g)
• 2C(s) + H₂(g) → C₂H₂(g)
• H₂(g) +I₂(g) → 2HI(g)
• C(s) +O₂(g) → CO₂(g)

Tags

NGSS.HS-PS1-4

Which  indicates the activation for the reverse reaction?

• A + B
• B + C
• C + D 
• A - D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What letter represents the activation energy for the forward reaction?

• A
• B
• C
• D

What letter represents the heat of  reaction?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Which correctly describes this reaction ?

• The reaction is endothermic and has a negative heat of reaction.
• The reaction is exothermic and has a negative heat of reaction.
• The reaction is endothermic and has a positive heat of reaction.
• The reaction is exothermic and has a negative heat of reaction.

Tags

NGSS.HS-PS1-4

What is the ΔH of this reaction?

• -20 kJ
• 20 kJ
• -60 kJ
• 60 kJ

Tags

NGSS.HS-PS1-4

What is the activation energy of the forward reaction?

• 75 kJ
• 225 kJ
• 300 kJ
• 225 kJ

Tags

NGSS.HS-PS1-4

What is the activation energy of the reverse reaction?

• 75 kJ
• 150kJ
• 225 kJ
• 300 kJ

Tags

NGSS.HS-PS1-4