Which hydrogen has the lowest pką? doors 0 0 Select one: O a. HA O b....
Question 19 (2 points) The reaction of 1,3-butadiene with hydrogen halide at 40°C will undergo addition under control a) 1. 2; thermodynamic b) 1, 2; kinetic O c) 1,4; kinetic d) 1.4: theromodynamic Question 20 (2 points) In the molecule shown below, determine which of the highlighted C-H bonds a tod is expected to have the lowest bond dissociation energy? Ha HE Hс Hd a) C-Ha b) C-Hb DC-HC d) C-Hd Provloun Page
Please answer all. Just need A,B,C or D
2. (01') Which proton has the lowest pKa value (This is Elvitegravir an HIV drug)? На CI O2Hd A) Ha B) Hb C) Hc D) Hd 3. (Q1) Which is the major product in this reaction? 1) Sia28H-THF 2) H202, NaOH C) D) но он 4. (a1') What is the hybridization of the nitrogen atom in the following structure? NH A) sp B) sp C) sp D) sp
i need all the answers to these
The lowest resonant frequency has: Select one: O a. the average intensity. O b. the highest intensity. O c. the lowest intensity. as a Light slows down as it enters a new region and undergoes refract result. The refracted light: Select one: O a. moves in the same direction as the normal. O b. bends toward the normal. O c. bends away from the normal. An object in free fall accelerates at 10...
Select which compound is the most reactive in an SN1 reaction Br Select one: O III Assuming no other changes, what is the effect of doubling both the alkyl halide and the nucleophile concentrations in the reaction below? for OH 79 + HB Select one: O a quadruples the rate b. triples the rate c. doubles the rate O d. no change e. rate is halved B. Select which compound is the most reactive in an SN 1 reaction Sel...
A student wishes to prepare a buffer solution at pH = 5.60. Which of these weak acids (HA, HB and HC) should he/she choose: HA (pKa = 2.57), HB (pKa = 5.36), or HC (pKa = 8.59)? Select one: a. Only HA b. Only HC c. Only HB d. HA or HB e. None of HA, HB or HC
Which hydrogen matches to which nmr signal?
Ha: 1H, ddd 2.95 ppm Hb: 1 H, d 2.86ppm Hc: 1H, m 2.50-2.44ppm Hd: IH, dt 2.38ppm He: IH, d 2.31ppm Hf 1H, ddd 2.24ppm Hg: 1H, d 2.16ppm Hh: 3H, m 2.05-1.82ppm Hi: 3H, s 1.63ppm Hj: İHan 1.61-1.53ppm Hk: 3H,s 1.59ppm CH 3 CH3
Ha: 1H, ddd 2.95 ppm Hb: 1 H, d 2.86ppm Hc: 1H, m 2.50-2.44ppm Hd: IH, dt 2.38ppm He: IH, d 2.31ppm Hf 1H, ddd 2.24ppm...
Question 35 (2 points) In the molecule shown below, determine which of the highlighted C-H bonds a to d is expected to have the lowest bond dissociation energy? Ha HD Hc Hd Oa) C-Hc Ob) C-Hb Oc) C-Ha O d) C-Hd Question 36 (2 points) Predict the major product(s) of the following reaction. Br2 light Br . Br Br CH2Br. CH2B1 -CH2Br Br IV Br O a) 11 Ob) IV Oc) III Od
CHM 233 Lecture Quiz #7: 1. Which peak should show up the furthest downfield in 'HNMR? He Ha Hb Hd A. a B. b C, c D. d 名0 F2 2
I
believe the Oxygen bonded to the pi bond is sp2 hybridized, the O
with thr formal positive charge is also sp2 hybridized and the
oxygen with the formal negative is sp3. Is this correct?
Question 7 MCresonance4 What is the total number of REASONABLE resonance contributors (including the one provided below) that can be drawn for ozone? Reasonable resonance contributors will generally not have more than one formal charge per atom and will not violate the "octet" rule for...
10. Which is a stronger acid: A) HA, K. - 4.4x10-10 B) HB, K, -2.6x10* 11. Identify the conjugate acid of CO 2- in the reaction C0,2- + H2POCHCO,- + HPO42- A) H.CO B) HCO3- C) H20 D) HPO, E) H2PO4 12. Calculate the pH of a carbonated beverage in which the hydrogen ion concentration is 3.4 x 10 M A) 2.34 B) 3.47 C) 6.01 D) 7.99 E) 10.53