所屬科目：研究所、轉學考(插大)◆普通化學
(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%)
(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%)
(A) potassium sulfate
(B) aluminum oxide
(C) chromium(III) bromide
(D) hypochlorous acid
(E) dinitrogen tetroxide
(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%)
(A) Using standard enthalpies of formation to calculate the enthalpychange (ΔH°) for the reaction.
(B) Calculate the enthalpy change for 1.50×102 L propane gas at 736torr and 25℃ is burned in excess oxygen. (Assume it obeys idealgas behavior.)
(A) hardness of solid: diamond, Na, KCl.
(B) vapor pressure at 25℃: CH3OCH3, CH3CH2OH, CH3CH2CH3.
(A) Calculate the molarity of the acetic acid solution. (4%)
(B) Calculate the pH of the acetic acid solution. (6%)
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