2017 AP Chemistry化學(xué)真題系列之選擇題免費下載

歷年AP Calculus BC微積分BC系列

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2017 AP Chemistry Practice Exam Multiple Choice Free Download

2017 AP 化學(xué)模考選擇題部分免費下載

此套Section I試卷計時1小時30分鐘

共50題

僅限使用鉛筆，無計算器

考試時會提供花常用的等式與常量

以及化學(xué)元素周期表

完整版下載鏈接見文末

部分真題預(yù)覽：

1）The mass spectrum of an average sample of a pure element is shown in the figure above. Which of the following is the identity of the element?

1. Y
2. Zr
3. Nb
4. Th

2)The ideal gas law best describes the properties of which of the following gases at 0°C and 1 atm?

1. PH₃
2. HBr
3. SO₂
4. N₂

3)At 298 K and 1 atm, Br₂ is a liquid with a high vapor pressure, and Cl₂ is a gas. Those observations provide evidence that under the given conditions, the

1. forces among Br₂ molecules are stronger than those among Cl₂ molecules
2. forces among Cl₂ molecules are stronger than the Cl?Cl bond
3. Br?Br bond is stronger than the Cl?Cl bond
4. Cl?Cl bond is stronger than the Br?Br bond

4) Which of the following has the bonds arranged in order of decreasing polarity?

1. H?F > N?F > F?F
2. H?I > H?Br > H?F
3. O?N > O?S > O?Te
4. Sb?I > Sb?Te > Sb?Cl

5) To determine the moles of Fe³⁺(aq) in a 100. mL sample of an unknown solution, excess KSCN(s) is added to convert all the Fe³⁺(aq) into the dark red species FeSCN²⁺(aq) , as represented by the equation above. The absorbance of FeSCN²⁺(aq) at different concentrations is shown in the graph below.

If the absorbance of the mixture is 0.20 at 453 nm, how many moles of Fe³⁺(aq) were present in the 100. mL sample? (Assume that any volume change due to adding the KSCN(s) is negligible.)

1. 4 × 10^?4 mol
2. 3 × 10^?4 mol
3. 4 × 10^?6 mol
4. 3 × 10^?6 mol

6)The first ionization energy of an element is the energy required to remove an electron from a gaseous atom of the element (i.e., X(g) → X⁺(g) + e^? ). The values of the first ionization energies for the third-row elements are shown in the graph above. On the basis of the information given, which of the following reactions is exothermic?

1. Cl(g) + Mg⁺(g) → Cl⁺(g) + Mg(g)
2. Al(g) + Mg⁺(g) → Al⁺(g) + Mg(g)
3. P(g) + Mg⁺(g) → P⁺(g) + Mg(g)
4. S(g) + Mg⁺(g) → S⁺(g) + Mg(g)

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