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一、外界条件对化学反应速率的影响1．对于可逆反应,外界条件对正、逆反应速率的影响是一致的,要增大都增大,要减小都减小,但变化幅度不一定相同。例如:无论正反应是放热反应还是吸热反应,升温时正逆反应速率都升高,但吸热反应方向速率升高幅度更大;降温时正逆反应速率都降低,但吸热反应方向的速率降低得更大。
First, the impact of external conditions on the rate of chemical reactions For a reversible reaction, the influence of external conditions on the rate of positive and negative reactions is the same. To increase, both increase and decrease, but the magnitude of change is not necessarily the same. For example, whether the positive reaction is an exothermic reaction or an endothermic reaction, the rate of positive and negative reactions increases at elevated temperatures, but the rate of increase of the endothermic reaction rate is greater; at the time of cooling, the rate of positive and negative reactions decreases, but the rate of endothermic reaction Reduce it even more.