第 1 题
1 分According to collision theory, what is the definition of the activation energy of a reaction?
AQA GCSE · Chemistry 8462
Rate of reaction：练习题
5 道选择题即时批改，另有 3 道文字题附完整解题步骤，全部围绕「Rate of reaction」。
8 道题目16 分免费，无需注册
第 2 题
1 分In a reversible reaction represented by \(A + B \rightleftharpoons C + D\), if the forward reaction is exothermic, what happens when the temperature of the system is increased?
第 3 题
1 分(HT only) For the gaseous reversible reaction:
\(2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)\)
What is the effect of increasing the pressure on the position of equilibrium and the rate of reaction?
第 4 题
1 分A catalyst increases the rate of a chemical reaction by providing an alternative pathway. How does this alternative pathway affect the activation energy?
第 5 题
1 分Which statement best describes a system that has reached dynamic equilibrium?
第 6 题
2 分In a chemical reaction, 250 cm3 of gas is produced over a period of 50 seconds. Calculate the mean rate of reaction in \(cm^{3}/s\).
先自己写一遍答案，再对照解题步骤。
第 7 题
3 分Explain, in terms of collision theory, why an increase in the concentration of reactants in a solution increases the rate of reaction.
先自己写一遍答案，再对照解题步骤。
第 8 题
6 分(HT only) A reaction in a closed system is at equilibrium. Explain why increasing the pressure of a gaseous system will shift the position of equilibrium towards the side with the smaller number of molecules.
先自己写一遍答案，再对照解题步骤。
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