A sealed 1-L flask is filled with 1 mole of H₂(g) and 1 mole of I₂(g). The reversible reaction H₂(g) + I₂(g) → 2HI(g) ensues. A plot showing what happens to the HI concentration as a percent of the gas mixture over time is shown below.

Now imagine repeating the experiment in the same sealed flask, but this time filling the flask with 2 moles of HI(g) and no H₂(g) or I₂(g). Sketch the %HI plot versus time that one might expect, and then justify it with an explanation.

Transcribed Image Text:

0 Time (min) 80 8 % of H and I atoms as HI 80 100