4. Reactivity 1 — What Drives Chemical Reactions(QUESTION)
Hess’s Law — Quiz
Test your understanding of hess’s law with 5 practice questions.
Practice Questions
Question 1
What is Hess’s Law most accurately stating about enthalpy change for a reaction?
Question 2
Why can Hess’s Law be used to find $\Delta H$ for a reaction that is difficult to measure directly?
Question 3
Which quantity is an example of a state function in chemistry?
Question 4
If reaction $A \rightarrow B$ has $\Delta H = -50\,\text{kJ}$ and reaction $B \rightarrow C$ has $\Delta H = +20\,\text{kJ}$, what is $\Delta H$ for $A \rightarrow C$?
Question 5
When a chemical equation is reversed, what happens to the sign of $\Delta H$?