課程名稱︰普通化學丙
課程性質︰必修
課程教師︰劉銘璋
開課學院：生農學院
開課系所︰生機系 園藝系
考試日期（年月日）︰2012/3/30
考試時限（分鐘）：100分鐘
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
1.Fill the blanks in the following sentences. (20%)
(a)Theoretical, (b)Arrhenius acid, (c)Avogadro's, (d)Precision,(e)molecular,
(f)heat capacity, (g)Extensve, (h)Actual, (i)electrolyte (j)nonelectrolyte
(k)Hydration, (l)intensive, (m)Arrhenius base, (n)Bronsted acid
(o)Bronsted base, (p)specific heat, (q)empirical, (r)Exothermic
(s)Endothermic, (t)Boyle's, (u)Charles's, (v)Accuracy
(1)An ___ property of a material depends upon how much matter is being
considered. Mass,length,and volume are this kind of properties.
(2)___ tells us how close a measurement is to the true value of the quantity
that was measured.
(3)An ___ formula shows the simplest whole-number ratio of the atoms in a
substance.
(4)___ yield is the amount of product that would result if all the limiting
reagent reacted.
(5)An ___ is a substance that, when dissolved in water, results in a solution
that can conduct electricity.
(6)___ is the process in which an ion is surrounded by water molecules
arranged in a specific manner.
(7)A ___ is a proton acceptor.
(8)The ___ of a subastance is the amount of heat required to raise the
temperature of one gram of the substance by one degree Celsius.
(9)___ process is a process that gives off heat from the system to the
surroundings.
(10)___ law states that the pressure of a fixed amount of gas maintained at
constant temperature is inversely proportional to the volume of the gas.
2.Express the fraction 1/23 as a decimal to 4 significant figures.
(A)0.0434 (B)0.0435 (C)0.04347 (D)0.04348 (E)0.0435. (2%)
3.Define the following units of concentration:molarity,molality,ppm,ppb. (4%)
4.Name the following compounds:(a)FeHPO4 (b) (NH4)2SO3 (c)PBr5 (d)HClO4
(e)C8H18 (5%)
5.Write the chemical formulas for the following compounds:
(a)mercury(I) nitrate (b)manganese(VII) oxide (c)potassium carbonate (3%)
6.Describe the procedure for an acid-base titration. (4%)
7.Describe the differences between the ideal gas equation and van der Waals
equation. (4%)
8.Define these terms:system,surroundings,isolated system, and first law of
thermodynamics. (4%)
9.The depletion of ozone (O3) in the stratosphere has been a matter of great
concern among scientists in recent years. It is believed that ozone can react
with nitric oxide (NO) that is discharged from the high-altitude jet plane,
the SST. The reaction is O3 + NO → O2 + NO2
If 0.740 g of O3 reacts with 0.670 g of NO, how many grams of NO2 will be
produced? Which compound is the limiting reagent?Calculate the number of moles
of the excess reagent remaining at the end of the reaction. (7%)
10.Characterize the following compounds as solube or insoluble in water:
(a)PbSo4, (b)BaCO3, (c)Li3PO4, (d)NH4ClO4 (e)Mn(OH)2. (5%)
11.Assign oxidation numbers of the underlined atoms in the following compounds
and ions: (a)IF7,I? (b)C2H4,C? (c)HNO2,N? (d)KO2, O? (e)P4, P? (5%)
12.Milk of magnesia is an aqueous suspension of magnesium hydroxide [Mg(OH)2]
used to treat acid indigestion. Calculate the vloume of a 0.035M HCl solution
needed to react with two spoonfuls of milk of magnesia [approximately 10.0 mL
at 0.080 g Mg(OH)2/ml] (6%)
13.A compound of P and F was analyzed as follows: Heating 0.2324 g of the
compound in a 378-cm^3 container truned all of it to gas, which had apressure
of 97.3mmHg at 77*C. Then the gas was mixed with calcium chloride solution,
which truned all of the F to 0.2631 g of CaF2 . Determine the molecular
formula of the compound. (6%)
14.Consider the reation H2 + Cl2 → 2HCl delta H =XXX KJ/mol(sorry forget it)
If 2.0 moles of H2 react with 3 moles of Cl2 to form HCl, calculate the work
done against a pressure of 1.0 atm at 25*C. What is delta U for this reaction?
Assume the reaction goes to completion. (4%)
15.From the following heats of composition,
CH3OH(l) + 3/2O2(g) → CO2(g) + 2H2O(l) delta H = -726.4 KJ/mol
C(graphite) + O2(g) → CO2(g) delta H =-393.5 KJ/mol
H2(g) + 1/2O2(g) → H2O(l) delta H =-285.8 KJ/mol
Calculate the enthalpy of formation of methanol(CH3OH) from its elements
C(graphite) + 2H2(g) +1/2O(g) → CH3OH(l) (7%)
16.A 44.0 g sample of an unknown metal at 99.0*C was placed in a constant-
pressure calorimeter containing 80.0 g of water at 24.0*C. The final
temperature of the system was found to be 28.4*C.
Calcuate the specific heat of the metal. (The heat capacity of calorimeter
is 12.4 J/*C) (7%)
17.The combustion of what volume of ethane (C2H6), measured at 23.0*C and 752
mmHg, would be required to heat 855 g of water from 25.0*C to 98.0*C (6%)
●Swater = 4.184 J/g.*C
●delta H(CO2) = -393.5 KJ/mol, delta H(H2O) = -285.8 KJ/mol
delta H(C2H6) =-84.7 KJ/mol
●Atomic mass of Mg:24.31, Ca:40.08, F:19.00 ,P:30.97
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