課程名稱︰普通化學乙 課程性質︰必修，可抵通識 課程教師︰簡淑華 開課學院： 開課系所︰材料系 考試日期（年月日）︰2008.10.28 考試時限（分鐘）：10:20~12:20，最晚1:00交 是否需發放獎勵金：是，謝謝 （如未明確表示，則不予發放） 試題 : 1.Provide chemical formulas for the following materials:(10%) (1)dinitrogen pentoxide (2)ferric hydroxide (3)ammonium bicarbonate (4)copper(Ⅰ)oxide (5)hydrochloric acid(6)chloric acid (7)potassium sulfate (8)lithium perchlorate trihydrate (9)isobutane (10)benzene 2.Fill up the following blanks:(15%) (1)Write the symbol for the following elements: Gold___,Lead___,Platinum___,Palladium___,Manganese___ (2)1 atmosphere=___torr=___Pa=___bar=___psi =___mH﹀2O(the height of a column of water) (3)3.54μg=___g; 125nm=___m; 15fs(femtoseconds)=___second (4)Give the chemical formula for melamine(三聚氰胺)_____. Its mass percent composition of nitrogen is_____. (C,12.011u;N,14.007u;H,1.008u) 3.Briefly explain or distinguish the following terms:(20%) (1)precision and accuracy (2)mass number and atomic mass (3)redox reactions (4)cathode and anode (5)Barometer and manometer (6)isotope (7)alkanes,alkenes and alkynes (8)equivalence point and end point (9)acid-base titration and precipitation tirartion (10)binary acid,oxoacid,and carboxylic acid 4.Write the mathematical expressions:(5%) (1)The Boyles law,the Charles' law,and the ideal gas law (2)Dalton's law of partial pressures (3)First law of Thermodynamics 5.The combustion in oxygen of 1.5250g of a alkane-derived compound composed of C,H, and O yields 3.047g CO2 and 1.247gH2O. What is the empirical formula of the compound? Given the molecular mass of the compound is 88.1u ,what is its molecular formula? Draw a plausible structual formula and its condensed structral formula. Is there more than one possibility?Explain. (C,12.011u;O,15.999u;H,1.008u)(10%) 6.Answer the follows:(40%) (1)N2O5 is an unstable gas that decomposed into NO2 and O2. (a)Write the chemical equation. (b)What would be the total pressure of gases percent if a 10.0L container at 22.0。C begins with 0.400 atm of N2O5 and the gas completely decomposes? (2)When aqueous sodium carbonate is added to barium chloride,the solution turns cloudy white with barium carbonate. Write the molecular,ionic,net ionic equtions for this reaction. (3)What volume of 0.20M NaOH is required to neutralize 20.0mL of 0.15M HCl in an acid-base titration? (4)There are three naturally occurring isotopes of neon. The percent abundances and atomic masses are neon-20,90.51% 19.99244u; neon-21,0.27% 20.99395u;neon-22 9.22% 21.99138u. Calculate the weighted average atomic mass of neon. (5)Give the average oxidation numbers of the C atoms in ethane,ethanol,acetaldehyde and acetic acid. (6)Calculate the density of methane gas in grams per liter at 25。C and 1 atm. (7)In a chemical reaction used in automotive air-bage safty system, N2 is produced by the decomposition of sodium azide,NaN3, at somewhat elevated temperature. What volumes ,measured at 25。C and 1 atm,is produced by the decomposition of 135g sodium azide?(Na,22.9898u) (8)According to th Kinetic Molecular Theory,what is the average trasitional kinetic energy of the gas moleculars at constant temperature T? What is the root-mean-square speed? (9)What is Graham's Law of effusion? Which effuses faster,nitrogen or argon ,when th two gases are compared under the same condition? How much faster? (10)Define the percent atom economy(%AE)of a reaction in Green Chemistry. What is %AE for each the following two equations: (a)C2H4+Cl2+Ca(OH)2→C2H4O+CaCl2+H2O (b)C2H4+1/2 O2→C2H4O 化學式部分數字我不會弄到右下...抱歉 希望大家還看得懂 若有錯誤，歡迎指正^^" -- 外觀版：華碩品質 華而不實 結構版：華碩品質 以卵擊石 散熱版：華碩品質 煎肉磐石 --

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