We’re being asked to rank the given compounds in order of increasing entropy at 25 ˚C.
The given compounds are: H2(g), HBrO4(g), HBr(g)
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).
Arrange the following set of systems in order of increasing entropy. Assume one mole of each substance and the same temperature for each member of a set.
H2(g), HBrO4(g), HBr(g)
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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.