111年 - 111 台灣聯合大學系統_學士班轉學生考試試題_A6：普通化學#116073

1. How many types of Bravais lattices do we have? (A) 7(B) 10(C) 12(D) 14(E) 16

2. Select the liquid-liquid solution that reveals a negative deviation from Raoult's law. (A) benzene-toluene(B) ethanol-hexane(C) acetone-water(D) heptane-water,(E) heptane- hexane.

3. Which of the following combinations has the same number of electrons? (A)(B)(C)(D)(E)

4. For a reversible reaction A + B ⇌ C + D, the enthalpy change and activation energy of the forward reaction are -20.0 kJ/mol and 85.0 kJ/mol, respectively. What is the activation energy of the reverse reaction? (A)65.0 kJ/mol(B) -105.0 kJ/mol(C) -65.0 kJ/mol(D) 105.0 kJ/mol(E) 130.0 kJ/mol.

5. Which of the following acids and its sodium salt are the best combination for buffering a solution at pH 4.30? (A) benzoic acid (B) propanoic acid (C) chloroacetic acid (D) hypochlorous acid (E) all of the above are similar

6. Which of the following substances are likely to be soluble in water? (A) aluminum nitrate(B) lead(II) sulfide(C) nickel(II) hydroxide(D) silver chloride(E) barium chromate.

7. For the synthesis of ammonia at 500℃, the equilibrium constant is . Determine which system in the following cases will shift toward the product?
(A) only i(B) only ii(C) only iii(D) i & ii(E) i & iii.

8. Which has the largest ion size? (A)(B)(C)(D)(E)

9. Which of the following electrolytes has the biggest difference between its expected and observed values of the van't Hoft factor? Assume the concentrations for all the electrolyte solutions are 0.05 m. (A)NaCl(B) MgCl₂(C)HCI(D)MgSO₄(E)Glucose

10. How is the central atom in XeF₄ hybridized? (A) sp (B) sp² (C) sp³(D) dsp³(E) dsp³

11. Select the reaction order of the following reaction for which the half-life of reactant A is independent of its initial concentration.

aA → products (A) zero order(B) first order(C) second order(D) both zero and first orders(E) both zero and second orders.

12. What kind of orbitals of carbon atoms are used to form π molecular orbitals in a benzene molecule? (A) s orbitals(B) p orbitals(C) sp orbitals(D) sp² orbitals(E) sp³ orbitals.

13. Calculate the formal charge for the central atom of a sulfate ion with the most stable Lewis structure. (A)-2(B)-1 (C)0 (D)1 (E) 2

14. Determine the pH at the second equivalent point for the titration of a H₃PO₄ solution with NaOH. (A) pH =(B) pH=(C) pH =(D) pH =(E) pH =