104年 - 104 國立嘉義大學_轉學生招生考試試題：普通化學#145291

1. Explain Boyle’s law (P and V) by using kinetic molecular theory. (5 points)

(A) Sodium chloride, NaCl

(B) Ethanol, C₂H₅OH.

3. Draw the Lewis structures for ICl₃ and tell the molecular geometry, the hybrid orbital used by the
central atom, and molecular polarity. (10 points)

4. For O₂, (A) Draw molecular orbital diagram and fill in the valence electrons.
(B) Compare the bond strength of O₂ with O₂⁺ based on bond order. (10 points)

5. Explain the forces that bound atoms together in (A) ionic bonding (B) covalent bonding.
(10 points)

6. (A) Calculate the pH of 0.500 M benzoic acid solution. (10 points)
(B) Calculate the pH after 20.0 mL of 1.00 M NaOH was added to 50.0 mL of 0.500 M benzoic
acid solution. (C₆H₅COOH, K_a = 6.28×10^-5)

7. For the following cell: Cu(s)|Cu²⁺(0.0250M)||Fe³⁺(0.150M), Fe²⁺(0.0380M)|Pt(s). E⁰(Cu²⁺→Cu) = 0.34 V, E⁰(Fe³⁺→Fe²⁺) = 0.77 V (10 points)
(A) Write the oxidation and reduction half-reactions.
(B) Calculate the cell potential, Ecell at 25oC, and tell if the cell reaction is spontaneous.

(A) Tell if the reaction is first order or second order according to these data.

(B) Calculate the concentration of C₄H₆ in mol/L at 5000 s.

9. Calculate \( \Delta S^\circ \) for the process that 1 mol (18.02 g) of ice melts at \( 0^\circ \)C and increases temperature to \( 50^\circ \)C. \( \Delta H_{\text{fus}} \) for ice is 6.02 kJ/mol. Specific heat capacity for water is 4.18 J/g·K. (10 points)

(A) Draw the crystal field diagram for Co(CN)₆^3- and CoF₆^3-. (15 points)

(B) Tell and explain the magnetism of Co(CN)₆^3- and CoF₆^3-.

(C) The wavelengths of absorbed radiation for these compounds are 770 nm and 290 nm (not respectively). Match the complex ion to the wavelength of radiation and explain.