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化学反应速率、化学平衡是高考的热点。考生解答这类题时存在一定问题。笔者在多年教学中摸索出利用图像快速准确解决化学反应速率变化、平衡移动方向判定等问题。一、浓度变化对化学反应速率、化学平衡的影响如合成氨反应 :N2 (g) + 3H2 (g) 2NH3(g) +Q(Q 0 ) ,当此反应达到
Chemical reaction rate and chemical balance are the hot spots of college entrance examination. Candidates have certain problems in answering such questions. In the course of many years of teaching, the author explored the use of images to quickly and accurately solve the problems of changes in the rate of chemical reactions and the determination of equilibrium movement directions. First, the effect of changes in concentration on the chemical reaction rate, chemical equilibrium, such as ammonia synthesis: N2 (g) + 3H2 (g) 2NH3 (g) + Q (Q0) when the reaction reaches