Bond Energy Calculations Quiz

What is bond energy?

• The amount of energy needed to break one mole of a particular bond.

• The amount of energy needed to form one mole of a particular bond.

• The amount of energy released when a reaction occurs.

• The amount of energy absorbed by the surroundings.

What is the energy change formula in a chemical reaction?

• Energy change = energy out - energy in

• Energy change = energy in + energy out

• Energy change = energy in - energy out

• Energy change = energy out + energy in

What type of reaction is it when energy is released to the surroundings?

• Endothermic

• Exothermic

• Neutral

• Isothermal

In the reaction H−H + Cl−Cl → 2 × (H−Cl), what is the energy in?

• 243 kJ/mol

• 679 kJ/mol

• 436 kJ/mol

• 864 kJ/mol

In the reaction H−H + Cl−Cl → 2 × (H−Cl), what is the energy out?

• 243 kJ/mol

• 436 kJ/mol

• 864 kJ/mol

• 679 kJ/mol

What is the bond energy of H−H?

• 243 kJ/mol

• 432 kJ/mol

• 436 kJ/mol

• 151 kJ/mol

What is the bond energy of Cl−Cl?

• 432 kJ/mol

• 243 kJ/mol

• 151 kJ/mol

• 436 kJ/mol

What is the bond energy of H−Cl?

• 432 kJ/mol

• 243 kJ/mol

• 436 kJ/mol

• 151 kJ/mol

What is the energy change for the reaction H−H + Cl−Cl → 2 × (H−Cl)?

• 100 kJ/mol

• 0 kJ/mol

• 185 kJ/mol

• -185 kJ/mol

In the reaction H−H + I−I → 2 × (H–I), what is the energy in?

• 590 kJ/mol

• 151 kJ/mol

• 295 kJ/mol

• 587 kJ/mol