課程名稱︰普通化學甲上 班次01(化學系)
課程性質︰必修
課程教師︰牟中原 陳振中合開
開課系所︰化學系
考試時間︰2004.10.27
試題 :
一、選擇題︰單選 每題３分（３０％）
1.Which of the following is a correct principle of kinetic theory of gases?
A. The particles are stationary.
B. The space between particles is small compared to their diameter.
C. The particles hve Coulombic (electrostatic) attractions to one another.
D. All directions of motion for the particles are equally likely.
2.Which of the following best describes the elastic collisions of ideal gas
particles?
A. Energy of collision is transferred into internal modes such as molecular
vibrations and rotations.
B. Energy of collision is conserved, meaning there is no loss of energy.
C. Energy of collision with a container wall is transferred as heat into
the wall.
D. Energy of collision stretches or in other ways distorts the gas particles.
3.Which of the following is true regarding the velocities of gas paticles?
A. The range of velocities increases with increasing temperature.
B. The range of velocities decreases with increasing mass.
C. The average energy of the gas particles increases with increasing velocity.
D. All of the above are true.
4.Which of the following is the correct unit for R, the ideal gas constant?
A. L˙mole / K˙atm
B. L˙atm / K˙mole
C. L˙K / mole˙atm
D. atm˙mole / K˙L
5.In the van der Waals equation, the parameter "a" represents:
A. The weight of each individual gas particle.
B. The volume occupied by each individual gas particle.
C. The number of atoms in a real gas molecule.
D. The attractions between individual gas particles.
6.The rate of effusion of hydrogen gas(H2, molar mass=2.016g/mole) is measured
to be 1925 m/s. Under the same conditions, the rate of effusion of an unknown
gas is found to be 483 m/s. The formula for the unknown gas is:
A. NH3(molar mass=17.03 g/mole)
B. O2(molar mass=32.00 g/mole)
C. CO2(molar mass=44.01 g/mole)
D. Br2(molar mass=159.8 g/mole)
7.Avogadro proposed his hypothesis to explain:
A. Law of definite proportion
B. Boyle's Law
C. Charle's Law
D. Gay-Lussac's law of gas reaction volume
8.Which of the following is not a postulate of Dalton's atomic theory?
A. atoms are not created or destoryed in chemical change
B. atoms combine in simple whole number ratios to form compounds
C. different elements have atoms of different masses
D. chemical change is a rearrangement of atoms
E. atoms of a single element can have different masses
9. 1.008 grams of hydrogen combines with 35.453 g of chlorine to form 36.463g
of a pure compound (hydrogen chlorine). Daiton's explanation for this
experimental fact might be:
A. one atom of hydrogen combines with 35.453 atoms of chlorine in this
reation.
B. hydrogen and chlorine atoms always combine in a 1:35 ratio.
C. chlorine accepts hydrogen's electron to form polar covalent hydrogen
chlorine
D. this is a simple mixture of elements because the ratio isn't a whole
number ratio
E. hydrogen and chlorine atoms aren't created or destroyed in the process so
the reactant mass is the same as the product mass.
10.Daiton suggested that atoms were indestructible and unchangeable to explain:
A. Avogadro's hypothesis
B. Energy conservation
C. why elements combine in fixed weight ratios to form compounds
D. why compounds combine in fixed weight ratios in chemical reactions
二、問答題
1. Name the following compounds. (20%)
a. NH4NO2 b. Co2S3 c. ICl d. Pb3(PO4)2 e. KIO3
f. H2SO4 g .Sr3N2 h. Al2(SO3)3 i. SnO2 j. HClO
2. Gold metal will not dissolve in either concentrated nitric acid or
concentrated hydrochloric acid. It will disolve, however, in agua regia,
a mixture of the two concentrated acids. The products of the reaction are
the AuCl4- ion and gaseous NO. Write a balanced equation for the
dissolution of gold in aqua regia. (4%)
3. Urea(H2NCONH2) is used extensively as a nitrogen source in fertilizers.
It is produced commercially from the reaction of ammonia and carbon dioxide
Heat,Pressure
2NH3(g) + CO2(g) ───────＞ H2NCONH2(s) + H2O(g)
Ammonia gas at 223℃ and 90 atm flows into a reactor at a rate of 500L/min.
Carbon dioxide at 223℃ and 45 atm flows into a reactor at a rate of 600L/min.
What mass of urea is produced per minute by this reaction assuming 100%
yield? (8%)
4. Calculate the intermolecular collision frequency and the mean free path in
a sample of helium gas with a volume of 10.0 L at 27℃ and 6.0 atm. Assume
that the diameter of a helium atom is 50 pm. (6%)
5. Write reactions to show how nitric and sulfuric acids are produced in the
atmosphere. Write reactions to show how the nitric acid and sulfuric acids
in acid rain react with marble and limestone.(Both marble and limestone are
primarily calcium carbonate.) (7%)
6. A 2.00 L sample of O2(g) was collected over water at a total pressure of
785 torr and 25℃. When the O2(g) was drie (water capor removed), the gas
had a volume of 1.94 L at 25℃ and 785 torr. Calculate the vapor pressure
of water at 25℃. (8%)
7. Consider the rection P4(g) → 2P2(g)
where Kp=1.00X10-1 atm at 1325K. In an experiment where P4(g) was placed
into a container at 1325K, the equilibrium mixture of P4(g) and P2(g) has
a total pressure of 2.00 atm. Calculate the equilibrium pressure of P4(g)
and P2(g). Calculate the fraction (by moles) of P4(g) that has dissociated
to reach equilibrium. (8%)
8. Classify each of the following as a strong acid, a weak acid, strong base,
or weak base in aqueous solution.
a.HNO2 b.HNO3 c.CH3NH2 d.NaOH e.NH3 f.HF g.HCOOH h.Ca(OH)2 i.H2SO4
answer
第一部份 選擇題
D B D B D B D E B C
第二部份 問答題
第一題
a. ammonium nitrite
b. cobalt(III) sulfide
c. iodine monochloride
d. lead(II) phosphate
e. potassium iodate
f. sulfuric acid
g. strontium nitride
h. aluminum sulfite
i. tin(IV) oxide 或 stannic oxide
j. hypochlorous acid 或 hydrogen hypochlorite
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