which one of the following is most likely to increase the rate of a chemical reaction?\nchoose 1 answer:\na…
which one of the following is most likely to increase the rate of a chemical reaction?\nchoose 1 answer:\na decreasing the concentration of a reactant\nb crushing the reactant into powder\nc decreasing the temperature
Answer
Explanation:
Step1: 分析选项A
降低反应物浓度，单位体积内活化分子数减少，反应速率降低。
Step2: 分析选项B
将反应物粉碎成粉末，增大了反应物的接触面积，单位体积内活化分子数增加，有效碰撞几率增大，反应速率加快。
Step3: 分析选项C
降低温度，活化分子百分数降低，反应速率降低。
Answer:
B. crushing the reactant into powder