which of the following is the strongest nucleophile:
A) NH3 B)CH3NH2 C) (CH3)2NH D) (CH3)4N+
which of the following is the strongest nucleophile: A) NH3 B)CH3NH2 C) (CH3)2NH D) (CH3)4N+
QUESTION 8:
Which of the following is the weakest base?
A.
NH3
B.
(CH3)3N
C.
CH3NH2
D.
QUESTION 9:
A compound which is insoluble in water but which dissolves in
dilute hydrochloric acid is
A.
probably an amide
B.
possibly a carboxylic acid
C.
almost certainly an amine
D.
probably neither acidic nor basic
E.
probably an ester
QUESTION 10:
We were unable to transcribe this imageQuestion 10 Which of the following compounds would be the strongest base? III ON...
identify the strongest base. A) NH3 B) HCOO- C) CH3- D) OH-
21) Which of the following is not a nucleophile? A) Br B) FeBr3 C) NH3 D) - E) CH3OCH3 22) An unknown compound, C9H12, gave the following NMR spectrum: Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at 7.04 ppm (4H) What is the structure of the compound? A CH,CH,CH, v. CHA CH; CH2CH3 СН3 V. CH CH3 CH CHCH3 СН3 CH3 A) 1 B) II C) III D) IV E) V
Which of the following bases is the STRONGEST? The base is followed by its Ky NH3, 1.76 x 10-5 (CH3CH2)2NH, 8.6 * 10-4 CH5NH2, 4.0 * 10-10 CsHEN, 1.7*10- CH3NH2. 4 4 * 104
How can i tell which is the strongest base from the three bases? ClCH2NH2 NH3 CH3NH2 Please explain.
Identify the strongest nucleophile. a. HO- b. I c. NaOCH2CH3 d. CH3CH2OCH2CH3
Which of the following pairs can form tertiary amide? a.CH3NH2+ CH3(CH2)3COOH b.(CH3)2NH + CH3(CH2)3CHO ( CH3)3N + CH3(CH2)3CHO d.(CH3)2NH + CH3(CH2)3COOH
Which of the following molecules would be considered the strongest acid? a. NH3 b. SiH4 c. PH3 d. H2Se e. BH3
4. What sequence would best accomplish this transformation? OH - acid (a) [1] SOCl2, [2] (CH3)2NH (b) [1] NH3, [2] excess CHI (c) NaBH4, [2] (CH3)2NH Ta) LiN(CH3)2 - NA
The strongest nucleophile is : a) fluorine anion b) chlorine anion c) bromine anion d) iodine anion