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2008 AP Chemistry Free-Response Questions Free Download

2008 AP 化学简答题部分免费下载

考试时会提供花常用的等式与常量

以及化学元素周期表

此套Section II试卷共6题

每道大题含有不同数量的小题

共计时95分钟

Part A计55分钟，第1-3题各20分

Part B计40分钟，第四题值10分，第5第6题各15分

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部分真题预览：

Section II, Part A,YOU MAY USE YOUR CALCULATOR FOR PART A可使用计算器：

1）Solid carbon and carbon dioxide gas at 1,160 K were placed in a rigid 2.00 L container, and the reaction represented above occurred. As the reaction proceeded, the total pressure in the container was monitored. When equilibrium was reached, there was still some C(s) remaining in the container. Results are recorded
in the table below.

1. Write the expression for the equilibrium constant, K_p , for the reaction.
2. Calculate the number of moles of CO₂(g) initially placed in the container. (Assume that the volume of the solid carbon is negligible.)
3. For the reaction mixture at equilibrium at 1,160 K, the partial pressure of the CO₂(g) is 1.63 atm. Calculate
   1. the partial pressure of CO(g) , and
   2. the value of the equilibrium constant, K_p .
4. If a suitable solid catalyst were placed in the reaction vessel, would the final total pressure of the gases at equilibrium be greater than, less than, or equal to the final total pressure of the gases at equilibrium without the catalyst? Justify your answer. (Assume that the volume of the solid catalyst is negligible.)

In another experiment involving the same reaction, a rigid 2.00 L container initially contains 10.0 g of C(s) , plus CO(g) and CO₂(g) , each at a partial pressure of 2.00 atm at 1,160 K.

f. Predict whether the partial pressure of CO₂(g) will increase, decrease, or remain the same as this system approaches equilibrium. Justify your prediction with a calculation.

 

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2008 AP Chemistry Free-Response Questions（Form B） Free Download

2008 AP 化学简答题（Form B）部分免费下载

考试时会提供花常用的等式与常量

以及化学元素周期表

此套Section II试卷共6题

共计时95分钟

下载方式请点击下方链接

2008 AP Chemistry （Form B）FRQ真题题目

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