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轉學考-普通化學
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104年 - 104 淡江大學 轉學考 普通化學#53301
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4. Which of the following molecules have a trigonal bipyramidal electron pair arrangement? Br
2
, BF
3
, CHBr
3
, CO, SF
4
, XeCl
2
____
其他申論題
【已刪除】6. The formula of an unknown compound is C7H7Br. Determine its structure based on the 300 MHz 1H and 75 MHz 13C spectra (obtained in CDCI3 solution) given as following. (10 pts)
#195145
第二部份：填充題（每個空格4分，共20分）1. Which of the following elements show a partially filled d orbital in the electron configuration with the lowest energy? Ti, Cr, Ni, Cu, Zn, Ga ____
#195146
2. How many electrons can be contained in all of the orbitals with n = 4? ____
#195147
3. Write down the formula for the fluoride of an element whose electron configuration is [Kr] 5s24d105p2.____
#195148
5. The quantitative relation between the Ka of a weak acid, the Kb of its conjugate base, and the water autoionization constant Kw. ____
#195150
第三部份：計算問答題（共60分） 1 . Describe and explain how to use a titration method to determine the analytical concentration CHA and the pKa value of a weak acid HA. Define all the quantities used in your answer. (20%)
#195151
(a) Draw the setup and indicate the cathode and anode, the positive and negative electrodes, and all the components in the cell.
#195152
(b) Explain where and how the liquid junction potential occurs in the cell.
#195153
3• For the reaction: CaCO3(s)⇌ CaO(s) + CO2(g) Kp = 1.00 at 727 °C. If a 48.8-gram sample of CaCO3 (100.0 g/mol) is put into a 10.0-L container and heated to 727 °C, what percent of the CaCO3 will react to reach equilibrium? (15%)
#195154
4. According to the provided information in the right table, calculate AH for:2Li(s) + 2HI(g)→ H2(g) + 2LiI(s)(10%)
#195155
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