The rate of a chemical reaction is determined by using the rate law expression of the elementary equation which is determined by the rate law of mass action and it states that it is directly proportional to the concentration...
concentration of chemical A present and inversely proportional to the concentration of chemical B present.If the concentration of chemical B is increased by 100 percent,which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate ...
A. lowering the temperature. B. decreasing the concentration of reactants. C. adding a catalyst. D. reducing the pressure. 相关知识点: 试题来源: 解析 C。解析:添加催化剂可以提高化学反应的速率。选项 A 降低温度通常会使反应速率减慢。选项 B 降低反应物浓度也会使反应速率减慢。选项 D 降低压力对...
一道GRE数学题,请详解The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present.If the concentration of chemic
The rate constant of a reaction is1.2×10−3s−1at30∘Cand2.1×10−3s−1at40∘C. Calculate the energy of activation of the reaction. View Solution The first order reaction2N2O(g)→2N2(g)+O2(g)has a rate constant of1.3×10−11s−1at270∘Cand4.5×10−10s−1at350...
The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the...
百度试题 结果1 题目Question. If the rate of the reaction is equal to the rate constant, the order of the reaction is(a) O (b) 1 (c) 2 (d) 3 相关知识点: 试题来源: 解析 A 反馈 收藏
A. decreasing the temperature B. increasing the concentration of reactants C. removing the catalyst D. decreasing the pressure 相关知识点: 试题来源: 解析 B。本题考查影响化学反应速率的因素。A 选项降低温度会减慢化学反应速率。B 选项增加反应物浓度可以加快化学反应速率,符合题意。C 选项移除催化剂会...
The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the...
What are the units for rate of a reaction? Rate of a Reaction: Rate of a reaction is defined as the ratio between the change in concentration of reactants (or products) and the change in time. It determines how fast or slow the reactants are reacted to form products. Therefore, rate...