19 A catalyst increases the rate of a chemical reaction by (1)(1)providing an alternate reaction pathway(2)providing the required heat of reaction(3) increasing the potential energy of the products(4) increasing the activation energy of the reaction 相关知识点: 试题来源: 解析 (1) 反馈...
(A) If a catalyst increases the forward rate of a reaction by a factor of two, it must increase the rate of the reverse reaction by a factor of two.(B) If a catalyst increases the rate of formation of a product by a factor of two, it must increase the rate of formation of the ...
rate=K[A]x[B]y K:the rate constant at a particular temperature [A]&[B]:the concentration of substances A & B x:the order with respect to A, and y is the order for B The overall order of reaction:the sun of the individual orders,x+y Colorimetry measures the intensity of a color...
The catalyst accelerates a reaction by raising the activation energy of the reaction.A.正确B.错误的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,是学习
Adding a catalyst can ___ the rate of a chemical reaction. A. raise B. lower C. double D. affect 相关知识点: 试题来源: 解析 D。本题考查词汇及对催化剂作用的理解。raise 通常用于“提升,提高(数量、水平等)”。lower 表示“降低”,催化剂不是单纯地提高或降低反应速率。double 意思是“加倍”...
apeople come from 正在翻译,请等待...[translate] aMenneking 开始[translate] aa catalyst is a substance that increases the rate of a chemical reaction without itself being used up 催化剂是增加一个化学反应的率,不用用完的本身的物质[translate]...
If a catalyst is added to a chemical reaction, which of the following is most likely to occur? A. The activation energy will increase. B. The reaction time will be prolonged. C. The reaction rate will remain the same. D. The reaction rate will increase. ...
What is the effect of using a catalyst on the reaction rate? A. Decrease it B. Increase it C. Have no effect D. Depend on the reaction 相关知识点: 试题来源: 解析 B。解析:催化剂能够降低反应的活化能,从而加快反应速率。反馈 收藏
When a catalyst is added to a reaction at equilibrium, what happens to the equilibrium position? A. Shifts to the right B. Shifts to the left C. No change D. Can't determine 相关知识点: 试题来源: 解析 C。解析:催化剂只能改变反应速率,不能改变平衡状态,所以平衡位置不变。
A. The catalyst was not in its active form, for example, it needed to be pre - treated but was not. B. The amount of catalyst used was too large, causing it to have a negative effect on the reaction rate. C. The reaction rate was measured inaccurately, and the actual reaction rate...