Question

For each of the following pairs, tell which has a higher entropy and explain why. 6. a. A sample of solid CO2 at-78°C or CO2 vapor at -78°C b. A solid sugar cube or the same sugar dissolved in a cup of tea. Two 100 mL beakers, one containing pure water and the other containing pure alcohol, or a beaker containing the same two samples after they have been mixed together. c. d. NaCI(s) or CaO(s) e. Cl2(g) or Br2(g)

Answer 1

We know that below is the entropy order,

Entropy of Gases > Entropy of Liquids > Entropy of Solids

The only option e) involves 2 gases while other options involve liquid, solid etc.

So, option e) has the highest entropy.