Question

question 1 (5 points) saved
entropy and enthalpy are the same concept.
a) true
b) false
question 2 (5 points) saved
all reactions are reversible.
a) true
b) false
question 3 (5 points) saved
all reactions are spontaneous.

Explanation:

For Question 1: Entropy ($S$) measures disorder, while enthalpy ($H$) measures heat content. They are distinct thermodynamic concepts.
For Question 2: Many reactions, like combustion of gasoline, are effectively irreversible under normal conditions.
For Question 3: Spontaneity depends on Gibbs free energy ($\Delta G=\Delta H - T\Delta S$). Not all reactions have $\Delta G<0$.

Answer:

1. B. False
2. B. False
3. B. False