未分類 108 - 題庫堂

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78.在密閉系統中，下列反應達到平衡時其平衡常數可表示為(A) Kc = [CO2] (B) Kc = [CaO][CO2] (C) Kc = [CaO][CO2]/[CaCO3] (D) Kc =

【題組】80.承第 78 題，在平衡系統中移走部分的 CO2，則反應會向哪一方向進行? (A)右 (B)左 (C)不變(D)無法確定

76. 若 A  B 的反應速率常數單位為 1/M·s，可推測得知本反應為(A) 零級反應 (B) 一級反應 (C) 二級反應 (D) 三級反應

77. 在容量為 4 公升的平衡系統中含有 1.0 mol H2S、4.0 mol H2 和 0.80 mol S2，試求出 ⇌在此溫度的 Kc 值?(A) 1.6 (B) 3.2 (C) 12.8

78. 在 kJ/mol 的反應平衡中下列改變何者會減少 Br2的濃度?(A) 提高溫度 (B) 減少 NO (C)加入 NOBr (D) 體積不變之下減少，加入 He

78. 在 kJ/mol 的反應平衡中下列改變何者會減少 Br2 的濃度? (A) 提高溫度 (B) 減少 NO (C)加入 NOBr (D) 體積不變之下減少，加入 He【題組】79. 根據題 7

80. 在反應方程式中， CH3COOH 的共軛鹼是(A) (B) (C) (D)

1. A student performs an experiment to determine the density of a sugar solution.She obtains the fol

2. What answer should be reported, with the correct number of significant figures,for the following

3. Write the name for Ca3(PO4)2.(A)calcium (III) phosphite (B)calcium (II) phosphite (C)calcium phos

4. Give the correct formula for aluminum sulfate.(A)Al2SO4 (B)Al(SO4)3 (C)Al3(SO4)2 (D)Al2(SO4)3

5. Determine the empirical formula for a compound that contains C, H and O.It contains 51.59% C and

6. Give the theoretical yield, in grams, of CO2 from the reaction of 4.000 moles of with 4.000 moles

7. The titration of 25.0 mL of an unknown concentration H2SO4 solution requires83.6 mL of 0.12 M LiO

8. How many subshells are there in the shell with n = 4?(A)3 (B)4 (C)6 (D)18

9. How many valence electrons does an atom of C have?(A)1 (B)4 (C)2 (D)3

10. Place the following in order of increasing radius. (A) (B) (C) (D)

11. Which of the elements listed below would most likely form a polar covalentbond when bonded to ox

12. Assuming the octet rule is obeyed, how many covalent bonds will an oxygenatom form to give a for

13. Which of the following Lewis structures is incorrect?(A) (B) (C) (D)

14. In the best Lewis structure for NO +, what is the formal charge on the N atom?(A)-1 (B)0 (C)+1 (

15. Which of the elements listed below is most likely to exhibit an expanded octet inits compounds?(

16. Give the number of lone pairs around the central atom and the moleculargeometry of SCl2.(A)0 lon

17. Use VSEPR theory to predict the geometry of the BF3 molecule.(A)linear (B)bent (C)trigonal plana

18. Which one of the following molecules has tetrahedral geometry?(A)XeF4 (B)BF3 (C)AsF5 (D)CF4

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