※ [本文轉錄自 NTU-Exam 看板] 作者: bpqd ( ) 站內: NTU-Exam 標題: [試題]林萬寅 普化乙期中考 93.11.12 時間: Fri Nov 12 13:26:34 2004 課程名稱︰普通化學乙 課程性質︰ 課程教師︰林萬寅 開課系所︰土木 化工 材料 考試時間︰93.11.12 試題 :1.Define the following terms 30% (a)mass number & isotope (b)disproportionation reaction (c)oxidizing agent & reducing agent (d)law of multiple proportion (e)manometer (f)Arrhenius theory of acids and bases 2.Indicate the oxidation number of the underlined atom in each of the following (a)CsO2 (b)SrTiO3 (c)H2S4O6 (d)KClO3 (e)C2H4O2 10% ￣ ￣ ￣ ￣ ￣ 3.Write the chemical formula of the following compounds. 10% (a)sodium hypochlorite (b)calcium bicarbonate (c)hypophosphorous acid (d)chromium (III)sulfide (e)tetraphosphorous octoxide 4.Briefly describe (a) the Dalton's atomic theory and (b) the Dalton's law of partial pressures. 10% 5.The root-mean-square speed u of H2 at STP is 1838m/s . What is the value of u for CH4 at 25度C? What is the relative average kinetic energy of CH4 at 25度C and H2 at STP? (C=12 H=1) 10% 6.A hydrocarbon(X) contains 85.71% carbon. The density of gas X at 0.95 atm and 300K is 1.62 g/L. Determine (a) the empirical formula (b) the molar mass, and (c) the molecular formula of X? (O=16) 10% 7.A 1.000g sample of Mcl2 is dissovlved in water to give 100.0mL MCl2 solution (a)A 50.0 mL MCl2 reacts with an excess of AgNO3 to yeild 1.131 g of AgCl. what is the atomic mass of the element M?(Ag=108 Cl=35.5) 5% (b)A 25.0 mL MCl2 requires 20.0 mL of AgNO3 in a precipitation titration. What is the concentration of AgNO3 ? 5% 8.The O2 produced in the decomposition of 24.5 g KClO3 (formula mass = 122.5) is collected a container of 0.5 L at 25度C. Calculate the pressure of O2 using (a) ideal gas equation and (b) van der Waals equation [a=1.36 L平方atm/mol平方 b=0.0218 L/mol reaction:2KCl03--->2KCl + 3O2] --

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