🤓 Based on our data, we think this question is relevant for Professor Stec's class at UIC.
We’re being asked to Predict which substance has greater molar entropy.
Recall that entropy is the degree of chaos or disorder of a system and that it depends on the following:
1. Phase: The gas phase has the highest entropy, followed by the liquid, and then the solid phase with the lowest entropy.
Gas > Liquid > Solid
2. Complexity: More elements in the compound leads to higher entropy.
Ex. NO3(g) [4 elements] has higher entropy than NO2(g) [3 elements].
3. Mass: The greater the mass, then the greater the entropy.
Ex. Xe(g) [greater mass] has higher entropy than He(g).
Predict which substance has greater molar entropy. Explain.
(a) P4(g) or P2(g)
(b) HNO3(aq) or HNO3(l)
(c) CuSO4(s) or CuSO4·5H2O(s)