Chapter 17, Problem 17.115IME

Estimate ΔS for the process depicted in Figure 17.1(a). if the apparatus contained 20 molecules in the flask on the left in the initial distribution, and each flask contained 10 molecules in the final distribution. Useful information: The number of ways to distribute n objects between two bins such that r particles are in one bin is called the number of combinations (C) and is given by the equation

$C(n,r)=\frac{n!}{r!(n-r)!}$

Where n! (“n factorial”) = 1 × 2 × 3 × … × n, and o! is defined to be 1.