所屬科目：轉學考-普通化學
3. Calculate the pH of 0.10 M NH4CN.() (A) 5.79 (B)8.21 (C) 8.87 (D) 5.13(E) 9.23
6. When the equation for the following reaction in basic solution is balanced, what is the sum of the coefficients?(A) 20(B) 10 (C)8 (D)13(E)11
7. A solution contains the ions Ag+, .Dilute solutions of NaCI, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order? (A) Na2S, NaCI, Na2SO4 (B) Na2SO4, NaCI,Na2S (C) Na2SO4, Na2S, NaCI (D) NaCI, Na2S, Na2SO4(E) NaCI, Na2SOa,Na2S
8. When NH3(aq) is added to(aq), a precipitate initially forms. What is its formula? (A) CuO (B) Cu(NH3) (C) Cu(OH)2 (D) Cu(NO3)2 (E)
11. A 100.0-mL sample of 0.2 M (CH3)3N is titrated with 0.2 M HCI. What is the pH at the equivalence point? (A) 5.4 (B)7.0 (C) 10.3 (D) 3.1 (E) 9.9
12. You have a solution of 0.10 M CI- and 0.10 M . You add 0.10 M silver nitrate dropwise into the solution. . Which of the following will precipitate first? (A) silver nitrate (B) silver chromate (C) cannot be determined from the information given (D) silver chloride (E) none of these
13. A 0.012-mol sample of Na:SO, is added to 400 mL of each of two solutions. One solution contains 1.5 x 103 M BaCh； the other contains for CaSO, = 6.1 x 10S. Which of the following statements is true? (A) both BaSO4, and CaSO4 would precipitate (B) not enough information is given to determine whether precipitation would occur (C) CaSO4 , would precipitate, but BaSO4, would not (D) BaSO4, would precipitate but CaSO4 would not (E) neither BaSO4, nor CaSO4 , would precipitate.
14. is_________for exothermic reactions and_________ for endothermic reactions. (A) favorable, unfavorable (B) favorable, favorable (C) unfavorable, favorable (D) unfavorable, unfavorable (E) cannot tell
15. For the reaction . Therefore, the reaction under standard conditions is (A) spontaneou us only at temperatures between 10 K and 800 K (B) spontaneous at temperatures greater than 800 K (C) spontaneous at all temperatures (D) nonspontaneous at all temperatures (E) spontaneous at temperatures less than 10 K
16. When a battery dies, which of the following is true? (A)△G° = 0 (B)△G = O (C) E°= O (D) Q= 1 (E) A and C
22. How many of the following molecules and ions are linear? (A) 4 (B) 2 (C) 3 (D) 1 (E)0
24. Which of the following statements about the ion is false? (A) the ion has a total of 24 electrons (B) the orbitals on the carbon atom are sp2 hybridized (C) the ion is expected to be diamagnetic (D) one C-O bond is shorter than the others (E) it has a planar molecular geometry
25. An ethyl group that is attached to a substituent that does not contain a hydrogen atom appears as what in a NMR spectrum? (A) a triplet and a quartet with relative intensities of 3 and 2, respectively (B) a triplet and a quartet with relative intensities of 2 and 3, respectively (C) a doublet and a triplet with relative intensities of 2 and 3, respectively (D) a doublet and a triplet with relative intensities of 3 and 2, respectively (E) none of these
26. How many of the following has a bond order = 0.5? (A) 2(B) 3 (C)4 (D) 1 (E)0
27.In the unit cell of sphalerite, ions occupy half the tetrahedral holes in a face-centered cubic lattice ions. What is the number of formula units of ZnS in the unit cell? (A) 3 (B) 5 (C) 4 (D) 1 (E) 2
28. Which of the compounds below is an example of a network solid? (A) NaCl(s) (B) S8(s) (C) MgO(s) (D) SiO2(S) (E)
29. A certain substance, X, has a triple-point temperature of 20℃ at a pressure of 2.0 atm. Which one of the following statements cannot possibly be true? (A) X can exist as a liquid above 20℃ (B) both liquid and solid X have the same vapor pressure at 20℃ (C) liquid X can exist as a stable phase at 25℃ , 1 atm (D) X can exist as a solid above 20℃ (E) all of these statements could be true
38. The solubility of the salt. The osmotic pressure exhibited by a solution saturated with Mx,Ay, at 25℃ is 1.22 atm. Determine the values of x and y by assuming ideal behavior. (A) x = 1, y=3 (B) x= 27y = 5 (C) x = 1, y= 1 (D) x= 2 y = 3 (E) none of these
41. Rank the following compounds according to increasing solubility in water.
I: CH3-CH2-CH2-CH3；ll: CH3-CH2-O-CH2-CH3； III: CH3-CH2-OH； IV:CH3-OH (A) I＜Il＜IV＜III (B) I ＜III＜IV＜I (C)I＜II＜III＜IV(D) III＜IV＜lI＜I (E) none is correct.
43. How many unpaired electrons are found in (A) 0(B) 4 (C) 1(D) 5(E) 2
45. The spectrochemical series is Which of the following complexes will absorb visible radiation of the highest energy? (A) (B) (C)(D)(E)
46. Which of the following complexes would be diamagnetic? (A)(B) (C) (D)(E) Fel(CO)5
47. Which has the greater number of unpaired electrons? I: square planar (A) I (B) II (C) neither I nor II has any unpaired electrons (D) more information is needed (E) both I and I| have the same (nonzero) number of unpaired electrons
48. When heat is added to proteins, the hydrogen bonding in the secondary structure breaks apart. What are the algebraic signs of△H and△S for the denaturation process? (A)△H is negative and △S is positive (B) both △H and△S are negative (C) △H is positive and △S is O (D) both △H and △S are positive (E) △H is positive and△S is negative
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) (A) 5.79 (B)8.21 (C) 8.87 (D) 5.13(E) 9.23
(A) 20(B) 10 (C)8 (D)13(E)11
.Dilute solutions of NaCI, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order? (A) Na2S, NaCI, Na2SO4 (B) Na2SO4, NaCI,Na2S (C) Na2SO4, Na2S, NaCI (D) NaCI, Na2S, Na2SO4(E) NaCI, Na2SOa,Na2S
(aq), a precipitate initially forms. What is its formula? (A) CuO (B) Cu(NH3) (C) Cu(OH)2 (D) Cu(NO3)2 (E)
is titrated with 0.2 M HCI. What is the pH at the equivalence point? (A) 5.4 (B)7.0 (C) 10.3 (D) 3.1 (E) 9.9
. You add 0.10 M silver nitrate dropwise into the solution. 
. Which of the following will precipitate first? (A) silver nitrate (B) silver chromate (C) cannot be determined from the information given (D) silver chloride (E) none of these
for CaSO, = 6.1 x 10S. Which of the following statements is true? (A) both BaSO4, and CaSO4 would precipitate (B) not enough information is given to determine whether precipitation would occur (C) CaSO4 , would precipitate, but BaSO4, would not (D) BaSO4, would precipitate but CaSO4 would not (E) neither BaSO4, nor CaSO4 , would precipitate.
is_________for exothermic reactions and_________ for endothermic reactions. (A) favorable, unfavorable (B) favorable, favorable (C) unfavorable, favorable (D) unfavorable, unfavorable (E) cannot tell
. Therefore, the reaction under standard conditions is (A) spontaneou us only at temperatures between 10 K and 800 K (B) spontaneous at temperatures greater than 800 K (C) spontaneous at all temperatures (D) nonspontaneous at all temperatures (E) spontaneous at temperatures less than 10 K
(A) 4 (B) 2 (C) 3 (D) 1 (E)0
ion is false? (A) the ion has a total of 24 electrons (B) the orbitals on the carbon atom are sp2 hybridized (C) the ion is expected to be diamagnetic (D) one C-O bond is shorter than the others (E) it has a planar molecular geometry
that is attached to a substituent that does not contain a hydrogen atom appears as what in a NMR spectrum? (A) a triplet and a quartet with relative intensities of 3 and 2, respectively (B) a triplet and a quartet with relative intensities of 2 and 3, respectively (C) a doublet and a triplet with relative intensities of 2 and 3, respectively (D) a doublet and a triplet with relative intensities of 3 and 2, respectively (E) none of these
(A) 2(B) 3 (C)4 (D) 1 (E)0
ions occupy half the tetrahedral holes in a face-centered cubic lattice 
ions. What is the number of formula units of ZnS in the unit cell? (A) 3 (B) 5 (C) 4 (D) 1 (E) 2
. The osmotic pressure exhibited by a solution saturated with Mx,Ay, at 25℃ is 1.22 atm. Determine the values of x and y by assuming ideal behavior. (A) x = 1, y=3 (B) x= 27y = 5 (C) x = 1, y= 1 (D) x= 2 y = 3 (E) none of these
(A) 0(B) 4 (C) 1(D) 5(E) 2
Which of the following complexes will absorb visible radiation of the highest energy? (A) 
(B) 
(C)
(D)
(E)
(B) 
(C) 
(D)
(E) Fel(CO)5
(A) I (B) II (C) neither I nor II has any unpaired electrons (D) more information is needed (E) both I and I| have the same (nonzero) number of unpaired electrons