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109年 - 109 高雄醫學大學_學生轉系考：普通化學#89790

科目：轉學考-普通化學 | 年份：109年 | 選擇題數：15 | 申論題數：6

試卷資訊

所屬科目：轉學考-普通化學

選擇題 (15)

1. The most stable Lewis structure of PF3 has ________ lone pairs and ________ bonding pairs. (A) 9, 3 (B) 10, 3 (C) 11, 4 (D) 12, 4 (E) 11, 3
2. Which of the following substances will form basic solutions in an aqueous solution? NH4Cl, Cu(NO3)2, K2CO3, NaF, NaCl? (A) NaF and NaCl only (B) NH4Cl only (C) K2CO3, NH4Cl , NaCl(D)NH4Cl, Cu(NO3)2(E)NaF and K2CO3
 3. The aqueous solubility of O2 44.8 mL per liter. What is the molarity of O2 in a standard water solution when the O2 is under its normal partial pressure in air in 0.20 atm?(A))1x10-4 M (B)2x10-4 M (C)3x10-4 M (D)4x10-4
 4. A 2.5 g sample of groundwater was found to contain 5.0 ng of Cr6+, what is the concentration of Cr6+in parts per million? Cr: 52.0 u (A)2.0 ppm (B)0.2 ppm (C)0.02 ppm (D)0.002 ppm (E)0.0002 ppm 
5. The number of nearest neighbors in a face centered cubic cell of identical atoms is: (A)4(B)8(C)12(D)16(E)18
 6. Use the Born-Haber cycle to calculate the standard enthalpy of formation (∆H ) for LiCl(s) given the following data: ∆H(sublimation) Li = 155.2 kJ/mol       I1 (Li) = 520 kJ/mol Bond energy (Cl–Cl) = 242.7 kJ/mol   EA (Cl) = 349 kJ/mol    Lattice energy (LiCl(s)) = 828 kJ/mol (A)440 kJ/mol (B)220 kJ/mol (C)380 kJ/mol (D)-380 kJ/mol (E)-440 kJ/mol
7. Which of the following reactions is associated with the most positive change in entropy? (A)C(s, graphite) + H2O(g) -＞ CO(g) + H2(g) (B) 2 CH4(g) + O2(g) -＞ 2 CH3OH(l) (C) 2 H2O2(l) + N2H4(l)-＞ N2(g) + 4 H2O(g) (D) 2 CO(g) + O2(g) -＞ 2 CO2(g) (E)N2(g) + O2(g) -＞ 2 NO(g)
8. A 0.1 L solution is made by dissolving 0.550g of CaCl2 (Mw: 110) in water, and completely dissociated into ion, calculate the osmotic pressure at 300 K?(A)2.69 atm (B)3.69 atm (C)4.69 atm (D)5.69 atm (E)6.69 atm
 9. A mixture of 8.00g of O2(g) and 8.00 g of CH4(g) is placed in a 15.0L vessel at 27 o C, what is the partial pressure of each gas and what is the total pressure in the vessel? (PO2(g), PCH4(g) , Ptotal) (A) (0.41, 0.82, 1.23) (B) (0.82, 1.23, 2.05) (C) (0.25, 0.25,0.5) (D) (0.5, 0.5, 1.0) (E) (0.5, 0.25, 0.75)

10. Which connection is correct (a) the first ionization energy of oxygen, (b) the second ionization energy of oxygen (c) the electron affinity of oxygen?5f30fa097fa8f.jpg (A) (a)=III, (b)=VII and (c)= I (B) (a)=IV, (b)=VII and (c)= III (C) (a)=IV, (b)=VII and (c)= II (D) (a)=III, (b)=II and (c)= I (E) (a)=VI, (b)=V and (c)= I

11. The energy difference between staggered and eclipsed conformations of ethane is 12.0 kJ/mol, propane is 13.6 kJ/mol, what is the C-C bond energy in the eclipsed form in propane? (A)4.0 kJ/mol (B)8.0 kJ/mol (C)1.6 kJ/mol (D)5.6 kJ/mol (E)none of the above
12. What element contributes to the 2019 Nobel Prize in Chemistry (A) Li (B) Na (C) Be (D) Mg (E)Al

13. For which of the following reaction does K= Kp at 100 ℃? (A) N2(g)+3H2(g) -＞ 2NH3(g) (B) CO(g)+H2O(g) -＞ CO2(g)+H2(g) (C) CaCO3(s) -＞ CaO(s)+CO2(g) (D)3Fe(s)+H2O -＞ Fe3O4(g)+4H2(g) (E) PCl5(g) -＞ PCl3(g) + Cl2(g)

14. [ 18F]FDG (2-deoxy-2-[ 18F]fluoroglucose)is used for PET imaging , it decays by_______ and[18F] will yield stable_______ (A) alpha emission, 18F (B) beta emission, 19F (C) positron emission, 18O (D) photon emission, 19F (E) neutron capture, 19O.

15. Below structure is the precursor of the Remdesivir, an anti-viral drug. Which statements are true?

 I. It is an aromatic compound,   II. It has 13 σ bond.   III. It shows dipole moment. 

IV. It has 11 σ bond.   V. It contains sp hybridization. V. It contains sp2 hybridization5f30fac0e41aa.jpg (A)Only I and IV. (B) Only II and IV. (C) I, II and III. (D)I, II, III and V (E)I, II, IV and V

申論題 (6)

a. 238 92 U decays to generate 234 90Th
b. Electron capture of 20180Hg to produce 20179Au
17. Please draw the completely MO energy-level diagram of N2. (6pts) and it’s molecular electron configuration (2pts), HOMO and LUMO of N2 (2pts). For N2- , N2, N2+ which has the highest bond energy(1pts) and which will show paramagnetism property (1pts)
18. Please write the electron configuration of first row transition metal of periodic table (10 pts)
19. For [Fe(H2O)6] 2+ , draw an energy diagram showing d orbital splitting, predict the number of unpaired electrons (6 pts)
20. Lactic acid (HC3H5O3) can be accumulated in muscle tissue during exertion. Please calculate the value of Ka for this acid in a 0.100 M aqueous solution. ( lactic acid is 3.7% dissociated in 0.100 M) (6pts)