103年 - 103 國立嘉義大學_轉學生招生考試試題：普通化學#145113

科目：研究所、轉學考(插大)◆普通化學 | 年份：103年 | 選擇題數：0 | 申論題數：27

試卷資訊

所屬科目：研究所、轉學考(插大)◆普通化學

選擇題 (0)

申論題 (27)

1. In which condition is more consistent with the behavior of ideal gas,why? (10%)
(A) high T and high P
(B)high T but low P
(C) low T but high P
(D) low T and low P
2. In a cyclic process, will the work greater, equal, or smaller than theheat, why? (5%)
3. In an adiabatic system, surrounding does 100 J of work on the system.What is the internal energy change for the system? (5%)
4. Arrange the molecules NH3, CH4, H2O in order of decreasing bonderangle, why? (10%)
5. Predict the molecular structure of the following compounds: (10%)
(A) CF4
(B) XeF4
(C) IF3
(D) NH3
(E) IF5
6. Igniting a mixture gas of H2 and O2 would cause explosion. Write outthe balanced equation. Is this reaction a kind of electrochemicalreaction, why? (10%)
7. Write the formula for each of the following compounds. (10%)
(A) potassium sulfate
(B) aluminum oxide
(C) chromium(III) bromide
(D) hypochlorous acid
(E) dinitrogen tetroxide
8. For SO32- ion
(A) Write the Lewis structure that obey the octet rule. (4%)
(B) Predict the molecular structure. (2%)
(C) Is it polar or nonpolar? (2%)
(D) Give the expected hybridization of the central atom. (2%)
9. Consider the combustion of propane: C3H8(g) + 5O2(g) → 3CO2(g) +4H2O(l) (10 %)
(A) Using standard enthalpies of formation to calculate the enthalpychange (ΔHo) for the reaction.compound C3H8(g) CO2(g) H2O(l)ΔHfo (kJ/mol) -104 -394 -286
(B) Calculate the enthalpy change for 1.50102 L propane gas at 736torr and 25oC is burned in excess oxygen. (Assume it obeys idealgas behavior.)
10. In each of the following groups of substances, rank them in thedecreasing order of the given properties, and explain briefly. (10 %)
(A) hardness of solid: diamond, Na, KCl.
(B) vapor pressure at 25oC: CH3OCH3, CH3CH2OH, CH3CH2CH3.
11. A 100.0 mL solution containing 1.201 g acetic acid (CH3COOH) isprepared. The formula weight of CH3COOH is 60.05, dissociationconstant Ka = 1.7610-5.
(A) Calculate the molarity of the acetic acid solution. (4%)
(B) Calculate the pH of the acetic acid solution. (6%)