[单选题]
The following graph shows the Gibbs free energy against the exte w*)ix;vloq:v8v lzw( nt ( qw(g 1mrvm:e+q2z hzof reaction for a reversible reactq2w ((1 mehzv+qrz mg:ion.
At what point is the reaction at equilibrium?
A. 1
B. 2
C. 3
D. 4
参考答案: B
本题详细解析: At equilibrium, Gibbs free energy is at a minimum.
