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2008 AP Chemistry Free-Response Questions Free Download

2008 AP 化學簡答題部分免費下載

考試時會提供花常用的等式與常量

以及化學元素周期表

此套Section II試卷共6題

每道大題含有不同數量的小題

共計時95分鐘

Part A計55分鐘，第1-3題各20分

Part B計40分鐘，第四題值10分，第5第6題各15分

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部分真題預覽：

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

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 化學簡答題（Form B）部分免費下載

考試時會提供花常用的等式與常量

以及化學元素周期表

此套Section II試卷共6題

共計時95分鐘

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2008 AP Chemistry （Form B）FRQ真題題目

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