Chapter 18, Problem 18PS

Which substance has the higher entropy?

1. (a) a sample of pure silicon (to be used in a computer chip) or a piece of silicon containing a trace of another element such as boron or phosphorus
2. (b) O₂(g) at 0 °C or O₂(g) at −50 °C
3. (c) I₂(s) or I₂(g), both at room temperature
4. (d) one mole of O₂(g) at 1 bar pressure or one mole of O₂(g) at 0.01 bar pressure (both at 298 K)