課程名稱︰分析化學 課程性質︰化學系必修 課程教師︰陳俊顯 開課學院：理學院 開課系所︰化學系 考試日期（年月日）︰2012-11-26 考試時限（分鐘）：110 mins 是否需發放獎勵金：是 （如未明確表示，則不予發放） 試題 : 滿分130分 成績乘以30％為期末總成績 一共四大題：第一頁三大題，之後是選擇題 助教會在收卷前五分鐘提醒各位。 有問題請舉手招呼助教（不要念題目出來），由助教趨近回答，若有需要，助教會向同學 們宣布。 請遵循下列規定： 　＊選擇題答案：直接作答在題目卷上。其餘的則作答在答案卷上 　＊請務必在題目卷上與答案卷上簽寫姓名．學號，試卷必須繳回 　＊為了避免監考與應試同學之困擾，絕對禁止向同學詢問．招呼．交談．互相傳遞文具 　　或其他物品等等 　＊作答不必依序但必須清楚標示題號，如果沒有標示題號，則不予計分，答非所問情形 　　，將斟酌予以扣分 　＊計算題：需要將式子列清楚，不必計算，進行數字上的運算與否，不納入計分考量 I.(24%) Definition. Define the term and respond to the questions. (5%)(a)(i 3%) normal error curve; (ii2%) What is the range in the x-axis for the curve? (7%)(b)(i 3%) null hypothesis (ii4%) We talked about Box4-1, the correlation between breast cancer (乳癌) and menopausal (更年期) oestrogen-progestion hormone therapy (雌激素-黃體激素荷爾蒙療法). What is the differnce in the use of null hypothesis between FDA(美國食品藥物管理局) and Dr.Malcolm Pike, and epidemiologist? (6%)(c)(i 3%) internal standard; (ii3%) Give a plausible reason why a calibration curve can not be used and, therefore, the method of internal standard has to be applied to find out the concentration of the analyte. (6%)(d)(i 3%) activity coefficient (ii3%) Why do activity coefficient not appear in the charge and mass balance equations? II.(10%) Iodimetry/Iodometry. Given hte following reduction potentials I2(s) + 2e- ←→ 2I- Eﾟ=0.535V I2(aq)+ 2e- ←→ 2I- Eﾟ=0.620V I3- + 2e- ←→ 3I- Eﾟ=0.535V (6%)(a) Calculate the equilibrium constant for the reaction I2(aq) +I-←→I3-. (4%)(b)Why is iodine almost always used in a solution containing I-? III.(15%) Solving solubility by the systematic method. Find the solubility of Mg(OH)2(s) in a saturated solution. Consider the following reactions. Mg(OH)2(s) ←→ Mg2+ + 2OH- Ksp =7.1*10^-12 Mg2+ + OH- ←→ MgOH+ K1 =3.8*1^2 H20 ←→ H+ + OH- Kw =1.0*10^-14 Note:(1) Do this question by the 9-step treatment. You need to itemize the 9 steps in your answer. (2) You need to use "successive approximation" to solve the solubility. 選擇題收回去了 發考卷之後再打> < --

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