Consider the gas-phase reaction between A2 (green) and B2 (red) to form AB at 298 K:
A2(g) + B2(g) ‡Œ 2AB(g) ˆ†G° = - 3.4 kJ/mol
(1) Which of the following reaction mixtures is at equilibrium?
(2) Which of the following reaction mixtures has a negative ˆ†G value?
(3) Which of the following reaction mixtures has a positive ˆ†G value?
The partial pressures of the gases in each frame are equal to the number of A2, B2, and AB molecules times 0.10 atm. Round your answers to two significant figures.

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(b) (a) (c)