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首頁 > 轉學考-普通化學 > 109年 - 109 臺灣綜合大學系統_學士班轉學生聯合招生考試試題：普通化學A#120923 >

題組內容

5.

B. Consider the following Lewis structure, where E is an unknown element:

What are the possible identities for element E? Predict the molecular structure for this ion. (6%)

其他申論題

b. What phase is stable at room temperature and 1.0 atm?

c. What are the normal melting point and normal boiling point of sulfur?

d. Which is the denser solid phase, monoclinic or rhombic sulfur?

A. For the species O2, O2+, and O2-, give the electron configuration and the bond order for each. Which has the strongest bond? (6%)

A. The titration of Na2CO3 with HCl has the following qualitative profile:Please identify the major species in solution as points B, D, and F (6%)

B. The salt BX, when dissolved in water, produces an acidic solution. Which of the following could be true? Account for your answer. (There may be more than one correct answer.) (6%)a. The acid HX is a weak acid.b. The acid HX is a strong acid.c. The cation B+ is a weak acid

a. If you want to prepare a buffer solution at pH = 4.0 or pH = 10.0, how would you decide which weak acid-conjugate base or weak base-conjugate acid pair to use?

b. Consider a buffered solution where [weak acid] ＞ [conjugate base]. How is the pH of the solution related to the pKa value of the weak acid?

c. A good buffer possesses a good buffering capacity. What is the buffering capacity? How do the following buffers differ in capacity? How do they differ in pH?

一. (20%) 請詳細說明旅次分佈 (Trip Distribution) 的 Fratar 法、Detroit 法及 Furness 法的內容及計算程序?

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