This problem revisits Example 15-3, part B. Re-do the problem three times, changing the amount of water to the following. 

A. 25 moles 

B. 100 moles 

C. 500 moles 

D. Use graphs or tables to compare the results of parts A through C to the original problem that used 50 moles of water. Give interpretations based on physical phenomena for any trends that are evident.

Example 15-3.

At ambient conditions, nitrogen dioxide and dinitrogen tetraoxide form a vapor phase equilibrium mixture with each other: 

2NO₂(g) ↔ N₂O₄(g)

A. 10 moles of nitrogen dioxide are placed in a reactor that is maintained at T = 25°C and P = 1 bar. Find the equilibrium composition of the vapor phase.

B. 10 moles of nitrogen dioxide and 50 moles of water are placed in a reactor that is maintained at T = 25°C and P = 1 bar. Find the equilibrium compositions of the liquid and vapor phases.