問題詳情
38.The approximate pKaof NH3 is 36; that of C2H5OH is 16. From this information, which (if any) of thefollowing conclusion is (or are) correct?
(A)The conjugate base of C2H5OH is stronger.
(B)The conjugate base of NH3 is stronger.
(C)C2H5OH is a weaker acid than NH3
(D)None of the these is correct.
(E)All of these are correct.
(A)The conjugate base of C2H5OH is stronger.
(B)The conjugate base of NH3 is stronger.
(C)C2H5OH is a weaker acid than NH3
(D)None of the these is correct.
(E)All of these are correct.
參考答案
無參考答案
內容推薦
- Which of the following statements is correct?(A)In O2, O22-, O2-, and O2+ species, only the O22-m
- According to the VSEPR theory, which of the following statements is correct?(A) The expected geom
- 若a、b兩數滿則102a+1 = 1000b-1 = 1000000000，則a+b=?(A)8(B)15(C)25/2(D)43/6
- Which of the following statements correctly describes an achiral molecule?(A)The molecule has a n
- Arrange in decreasing order of stability of the following four isomers.(I)cis-1-chloro-2-methylcy
- Of the following sets of four quantum numbers, identify the ones that can exist for an electron i
- Diastereomers have the same(A)melting point. (B)reaction rate toward optically active reagent. (C
- Which of the following statements is correct?(A)A structure with two chiral centers will always g
- 如圖(九),G為△ABC的重心,M、N兩點分別在 上 ,且 。若 =4, =3,∠B=90°,則長方形MBNG的面積為何?(A)2(B)3(C)3/4(D)4/3
- 珠珠家共有九人，已知今年這九人歲數的眾數、平均數、中位數、四分位距均為20，則關於3年後這九人歲數的統計量，下列敘述何者錯誤？(A)眾數是23(B)平均數是23(C)中位數是23(D)四分位距
內容推薦
- The activation energy(Eact) of a give reaction is unrelated to which of the following parameters?
- Who characterized alpha, beta and gamma radiation?(A)Thomson (B)Einstein (C)Rutherford (D)Heisenb
- Which of the following molecules has the highest bond order?(A)BN (B)CO (C)NO (D)Ne2 (E)F2
- Thiols are alcohol analogs in which the oxygen has been replaced by sulfur (e.g., CH3SH). Given t
- Rank the transition states which occur during the following reaction steps in order of increasing
- Which of the following atoms is paramagnetic?(A)Cd (B)Tl1-(C)Nb1+ (D)Ni (E)Ru1+
- An alkane with a molecular formula C6H14 reacts with chlorine in the presence of light and heat.
- In the traction of a reagent such as HBr with an alkene, the frist step of the reaction is theto
- Markovnikov’s rule “works” because:(A)The most stable transition state is the one leading to the
- The product from the reaction of 1-pentene with Cl2 in H2O is named:(A)1-Chloro-2-pentanol (B)2-C
- Treatment of 2-methyl-2-butene with HBr in the presence of peroxide yields(A)A primary alkyl brom
- Which of the following is least able to serve as a nucleophile in a chemical reaction?(A)Br-(B)OH
- The strongest evidence for the formation of a bridged bromonium ion as an intermediate in the add
- A compound having a molecular formula of C20H36 is inert to catalytic hydrogenation. Which of the
- The bimolecular subsittution reactionCH3Br + OH- →CH3OH + Br-is represented by the kinetic equati
- The solvoysis reactions of optically active halides generally proceed with(A)Complete racemizatio
- Which of the following statements pertaining to an SN2 reaction are true?The rate of reaction i
- Which of the following phrases are not correctly associated with SN1 reactions?Rearrangements p
- Carboxylic acids exist in the vapor state as:(A)Monomeric species (B)Cyclic esters (C)Cyclic dime
- Which of the following statements is true concerning pKa?(A)The larger the pKavalue, the weaker t
- Referring to the following equilibrium (R=alkyl group) (A)K < 1 ; the equilibrium would lie th
- 如圖(十二)，圖上有B、C兩點 為圓的兩切線。若 將圓分成兩弧，且其中一弧的長為圓周長的1/10，則∠BPC的度數為何？(A)108(B)120(C)144(D)162
- (28~30)【題組】Why did Chief Seattle ask “Every part of the Earth is sacred to my people?”(A) Becaus
- 如圖(十六)，有兩全等的正三角形 ABC、DEF，且D、A 分別為 △ABC、△DEF 的重心。固定D 點，將 △DEF 逆時針旋轉，使得A 落在 上，如圖(十七)所示。求圖(十六)與圖(十七
- Which alkyne yields butanoic acid (CH3CH2CH2CO2H) as the only organic product upon treatment with