Module 14 lesson 3

​This problem looks like a lot, but it is just stoichiometry! You are just using conversion factors!

Multiple Choice

Which of the following is (are) included in a thermochemical equation?

• physical states of the reactants and products

• a balanced chemical equation

• change in enthalpy

• All of the above

Multiple Choice

Standard enthalpy changes have the symbol ΔH°. What component of the symbol indicates that the changes were determined with all the reactants and products at standard conditions?

• the H

• the Δ

• the zero subscript

• Nothing indicates this.

Multiple Choice

Which of the following has a positive change in enthalpy? 

• the combustion of glucose

• vaporizing water

• condensing water

• freezing water

Multiple Choice

Which of the following is true for enthalpy of combustion?

• It is positive for glucose.

• It is negative for propane.

• It measures the change in temperature that occurs.

• None of the above.