Bond Enthalpy Calculations

Using the table of average bond energies below the image, the ΔH for the reaction in kJ is.....

• + 160 kJ

• -63 kJ

• - 160 kJ

• -217 kJ

Tags

NGSS.HS-PS1-4

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Using the reaction & table above, determine the change in energy and whether or not the reaction is endothermic or exothermic:

• -2054 kJ endothermic

• 2045 kJ endothermic

• -2045 kJ exothermic

• 2045 kJ exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

How much energy is required to break all of the bonds in the first molecule depicted in the reaction above? (you must include the proper sign for credit)

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NGSS.HS-PS1-4

What is the bond energy in a chemical reaction primarily a measure of?

• The temperature change during the reaction

• The energy required to break a mole of bonds in gaseous molecules

• The pressure exerted by the reaction

• The volume change during the reaction

Tags

DOK Level 2: Skill/Concept

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NGSS.HS-PS1-4

Determine the\(\Delta E\)for the reaction above

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

ΔH means:

• temperature

• calorimetry

• enthalpy

• syntropy

What is bond enthalpy?

• The energy required to break a mole of bonds in gaseous molecules

• The energy released when a bond is formed

• The temperature change during a reaction

• The pressure change during a reaction

Tags

NGSS.HS-PS1-4

Which of the following factors affects bond enthalpy?

• Bond length

• Molecular weight

• Color of the compound

• State of matter

Tags

NGSS.HS-PS1-4