# Problem: Predict which substance has greater molar entropy. Explain.(a) NO2(g) or N2O4(g)(b) CH3OCH3(l) or CH3CH2OH(l)(c) HCl(g) or HBr(g)

🤓 Based on our data, we think this question is relevant for Professor Zimmer De Iuliis' class at TORONTO.

###### FREE Expert Solution

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). ###### Problem Details

Predict which substance has greater molar entropy. Explain.

(a) NO2(g) or N2O4(g)

(b) CH3OCH3(l) or CH3CH2OH(l)

(c) HCl(g) or HBr(g)