南京晓庄学院 Inorganic Chemistry 课程考试试卷
2002–2003 学年度第 1 学期
院（系）主任审核签名：
班级
chemistry 院（系）02(2)级
共7页
命题教师：Ding bo-tao
校对人：long qi/song yi
姓名
序号
一
二
学号
三
A B
四
五
得分
六
七
八
九
总分
得分
I
Monochoices
1 At a given temperature,
C (graphite) + O2 (g) = CO2 (g)
C (diamond) + O2 (g) = CO2 (g)
C (graphite) = C (diamond)
the relationship between ΔH1 andΔH2 is
(a) ΔH1 ＞ΔH2
(b) ΔH1 ＜ΔH2
(c) ΔH1 = ΔH2
(d) can’t be determined
ΔH1
ΔH2
ΔH3=1.9kJ mol-1
CuCl2 (s) + Cu(s) = 2CuCl(s)
ΔrHmθ = 170 kJ molCuCl2 (s) + Cu(s) = 2CuCl(s)
ΔrHmθ= -206 kJ molthen the ΔrHmθ of CuCl(s) is
(a) 36 kJ mol(b) 18 kJ mol
(c) -18 kJ mol
(d) -36 kJ mol
2
3
At 298K, 1mol NaCl solid is put into 1 L water, then for the dissolving
process
(a) ΔG>0,ΔS>0
(b) ΔG<0,ΔS>0
(c) ΔG>0,ΔS<0
(d) ΔG<0,ΔS<0
4 Which statement is correct
(a) The percent dissociation of reactants doesn’t change when initial
concentration changes.
(b) The percent dissociation of one reactant changes when the initial
concentration of the other reactant changes.
(c) The equilibrium constant changes when initial concentration changes.
(d) The equilibrium constant doesn’t change when temperature changes.
5 The decomposition of NO2, a brown gas, to form O2 and colorless NO has
an equilibrium constant, Kc , of about 1.7* 10-5 at 500oC.
2 NO2 (g) =
1
2NO(g) + O2 (g)
what is the numerical value of the equilibrium constant , K c’, for the following
reaction?
NO2 (g) = NO(g) + 1/2O2 (g)
(a) Kc’ =1/2Kc
(b)Kc’=( K c ) 1/2
( c) Kc’=2 Kc
(d)Kc’= Kc 2
6 After being mixed, which group gives a buffer solution?
(a) 10 L 0.2 M HCl and 10 L 0.1M NaCl.
(b) 10 L 0.2 M HAc and 10 L 0.1M NaOH.
(c) 10 L 0.2 M HAc and 10 L 0.3M NaOH.
(d) 10 L 0.2 M HCl and 10 L 0.2M NaOH
7 The solubility of BaF2 in 0.40 M NaF is
(Ksp BaF2 = 2.4 * 10-5, neglect the hydrolysis of F- )
(a) 1.5 * 10-4 M
(b) 6.0 * 10-5 M
(c) 3.8 * 10-6 M
(d) 9.6 * 10-6 M
For the reaction, Cr2O72- + I - +H+
Cr3++ I2 + H2O
the coefficients of the balanced chemical equation are
(a) 1, 3, 14 , 2 , 1.5 , 7
(b) 2, 6, 28, 4, 3, 14
(c ) 1, 6,14, 2, 3, 7
(d) 2, 3, 28, 4, 1.5 ,14
8
9 Which reduction potential of the following couples has nothing to do with
the pH value?
(a) MnO4-/Mn2+ (b) H2O2/H2O (c) O2/H2O (d) S2O82-/SO4210 Two half-cells have the same electrodes and electrolytes, both half-cell can
undergo half-reactions, but the concentrations are different, which of the
following choices is correct?
(a) Eo=0 , E=0
(b) Eo=0 , E=0
(c) E0=0 , E=0
(d) E0=0 , E=0
11 About the following two chemical equations, which statement is correct
completely?
2Fe3+ + Sn2+ = Sn4+ + 2Fe2+
Fe3+ + 1/2 Sn2+ = 1/2Sn4+ + Fe2+
(a)
Eo, ΔrGmθ, Kc of two chemical equations are equivalent respectively.
(b)
Eo, ΔrGmθ, Kc of two chemical equations are not equivalent .
2
ΔrGmθ of two chemical equations are equivalent, but E o, Kc are not
equivalent .
Eo of two chemical equations are equivalent, but ΔrGmθ, Kc are not
equivalent .
(c)
(d)
12
which statement about the reaction order is correct
(a) Reaction order must be a positive integer.
(b) The second-order reaction is bimolecular reaction.
(c) Reaction order increases when temperature increases.
(d) The reaction order of a reaction must be measured by experiments.
13 In acidic solution, the hydrolysis reaction of formic acid and the
corresponding rate equation are
HCOOCH3+H2O HCOOH+CH3OH r = k c(HCOOCH3) c(H+)
there is no H+ in overall equation, but H+ appears in rate equation, the
reasonable explanation is
H+ is a catalyst
H+ is one reactant appeared only in middle step(s) of the whole
process
(c ) H+ is one reactant appeared in the slow step.
(d) All the above may be correct.
(a)
(b)
14 Which chemical bond has the weakest polarity?
(a) H-F (b) H-O (c) O-F (d) C-F
15 Which of the following molecules has two lengths of bonds?
(a) CO2 (b) SO3 (c) SF4 (d) XeF4
16 Which molecule has ∏33 resonance bond?
(a) O3 (b) SO3 (c) NO2 (d) HNO3
17 The strongest hydrogen bond is
(a)S-H..O
(b)N-H..N
(c)F-H..F
(d)C-H..N
II Fill in the blanks
1
At 298K, for the formation of liquid water, ΔrGmθ= - 228.6 kJ mol-1, ΔrSmθ= 44.4J mol-1 K-1 , then ΔrHmθ is
2 At a given temperature, the reaction PCl5 (g) = PCl3(g) +Cl2(g) reaches
equilibrium. If the temperature and the volume are kept constant, and some
inert gases are added in it, then the equilibrium will shift
to
.
3
3 For the reaction, 2A + B = 2D Kp = pD2 /pB , if an increase in temperature
or an increasing in pressure shifts the equilibrium to the left, then the forward
reaction is
(exothermic or endothermic)reaction, the expression
of Kc is
4 The conjugate base of NH4+ is
2+ is
5]
, the conjugate acid of [Fe(OH)(HO)
.
5 Given that ΔfGmθ of S2- is 85.80 kJ mol-1, ΔfGmθof HS- is 12.05 kJ mol-1 ,
then the value of Ka2 of H2S is
6 In a saturated solution of CaF2 containing 0.10M CaCl2 , the concentration
of F- is
( Ksp CaF 2 = 2.7 * 10-11 )
At 25oC, the Ksp of Mg(OH) 2 is 1.8 * 10-11 , the pH of the saturated Mg(OH)
2 solution is
7
8 A solution contains 0.01M KBr, KCl and Na2C2O4 ,respectively, if 0.01M
AgNO3 is added into the solution little by little, then the first precipitate
is
, the last precipitate is
9
For the overall redox reaction
Cu(s) + 2H+ ( 0.01M ) = Cu2+ ( 0.1M ) + H2 ( g, 91kPa ) ,
the corresponding symbol of voltaic cell is
10
The elementary reaction
2NO+Cl2 2NOCl
is
( uni-,bi-,ter- ) molecular reaction, and
(the first, the second, or the third) order reaction,
the rate equation is
11 The electron configuration of a ground state atom with mass number,
56 ,and 30 neutrons is
The electron configuration of a ground state atom with mass number, 209,and
126 neutrons is
12 In the six periods,
has the largest electronegtivity,
has
the smallest electronegtivity. Generally, the electronegtivity of nonmetal is
greater than
13 The hybridization of the central atom in OF2 molecule is,
this molecule
14 The geometries of NO2+, NO2 ,NO2 –are
4
the geometry of
, respectively ,and
has the smallest bond angle.
15 The complex compound [Cr(OH)(C2O4) (en) (HO)] is named as
III
Calculations
1 50ml 0.10 M HAc solution and 25ml 0.10 M NaOH solution are mixed
together, what is [H+]?( Ka = 1.8 * 10-6)
2 Given Hg2++2e = Hg
OO=0.85V
Hg22++2e=2Hg
OO=0.80V (1)
calculate the standard equilibrium constant (KO ) of the reaction:
Hg2++Hg = Hg
(2) calculate the concentration of Hg2+ in 0.10 M Hg2 (NO3) 2 solution
( 25oC )
3 Generally speaking, the reaction rate increases about 1 fold if the
temperature increases
( for example, from 20oC to 30oC )
when
temperature is near room temperature. If a reaction obeys this approximate
rule, calculate the activation energy of this reaction.(‘in kJ mol-1)
IV Answer the following questions:
1 Which requires more NaOH ,to neutralize 50.00ml, pH = 3.80 HCl solution
or to neutralize 50.00ml,pH = 3.80 HAc solution ? Why?
5
2 Metal Cs and crystal CsCl both belong to cubic crystal cell, the following
figures are their schemes.
(1) What kind of cubic crystal cell does each belong to?
(2) How many atoms or ions are there in one crystal cell?
(3) The edge of the crystal cell of Cs is 0.605 nm , calculate the radius of Cs
atom.
3 Given that the magnetic moments of the following complex ions are [Cd(CN)
2- u=0 B.M ; [Co(en) Cl ]Cl u=0 B.M
4 ]
2
2
(1)name the two complex ions
(2) write the hybridizations and the electron configuration of the central atom,
(3)write the geometries of the complex ions.
6
4 Write the symbol, name, electron configuration and the block of the the
following elements.
(1)The inert gas in the fourth period
(2) The VIII group element in the fourth period
(3)The element with half filled 5p subshell..
7