gle of rotation 0° angle of rot 4. In the following reaction, which molecule is the stronger conjugate acid? + CH 3-OH Lit CH3 A) Li CH3 B) CH3OH CHA C) CH4 + CH3-O Lit D) CH3O Lit 5. In the following reaction, which molecule is the weaker conjugate base? Lit CH3 A) Li CH3 + CH 3-OH CH4 B) CH3OH C) CH4 + CH3-0 Lit D) CH3O Li

gle of rotation 0° angle of rot 4. In the following reaction, which molecule is the stronger conjugate acid? + CH 3-OH Lit CH3 A) Li CH3 B) CH3OH CHA C) CH4 + CH3-O Lit D) CH3O Lit 5. In the following reaction, which molecule is the weaker conjugate base? Lit CH3 A) Li CH3 + CH 3-OH CH4 B) CH3OH C) CH4 + CH3-0 Lit D) CH3O Li

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter4: Polar Bonds, Polar Reactions

Section: Chapter Questions

Problem 13E: For each molecule below, draw the conjugate acid or conjugate base or both if the molecule hasboth a...

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Complete the equation for the reaction between each Lewis acid-base pair. In each equation, label which starting material is the Lewis acid and which is the Lewis base; use curved arrows to show the flow of electrons in each reaction. In doing this problem, it is essential that you show valence electrons for all atoms participating in each reaction. (a) (b) (c) (d)
The following are equivalent ways of asking about the acidity of an H atom: • What is the most acidic H on the molecule? • Which H is associated with the published pKa value? • Which H on the molecule is easiest to remove? • Which H on the molecule takes the least energy to remove? • Which bond to an H is most polarized? • For which H atom is removal least uphill in energy? • Which bond to an H atom, when broken, results in the lowest PE conjugate base? We will often find the last of these questions is easiest to answer. To do this, find all the different Hatoms on the molecule, and draw all possible conjugate bases.Only the lowest-energy one is the “real” conjugate base. Identify this structure, and you have found the most acidic H. Use this strategy to find the most acidic H on each of the following molecules. Note: Each structure hasat least three different kinds of H’s, so draw at least three unique conjugate bases for each.
For the previous four questions, label each molecule that appears in the question or your answer asstrong acid, strong base, weak acid, or weak base.
Several acids and their respective equilibrium constants are: Which is the strongest acid? Which is the weakest acid? Which acid has the weakest conjugate base? Which acid has the strongest conjugate base?
Summarize the relationship between pKa and acid strength by completing the following sentences: a. The higher the pKa of an acid, the stronger or weaker the acid. b. The lower the pKa of an acid, the stronger or weaker the acid.
Which base, CH3NH2 or (CH3)2NH, is the stronger base? Which conjugate acid, (CH3)2NH2+ or (CH3)2NH3+, is the stronger acid?
Which is the stronger base, CH3PH or CH3S? Hint: Which base has the weaker conjugate acid? CH3-S: VS IA Η | ΠΙΑ LBe 11 12 Na Mg CH3-PH IIIA IVA VA VIA VILA He 9 10 B 68 80 104 106 106 107 108 100 110 Fr Ra Ac Ung Unp Unh Uns Uno Une Unn Select one: O A. CH3PH* O B. CH3S™ 51 13 Al 14 CNO F Ne Si 15 16 S "a P 37 38 30 40 41 42 43 44 45 46 47 48 40 50 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te VIILA 66 57 56 72 73 74 75 76 77 78 791 80 81 82 83 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi 22 23 24 25 26 27 28 29 30 31 32 -33 34 35 19 20 21 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 20 By By 30 E 17 CI Ar 18 61 62 63 54 I Xe 84 85 Po At Rn 86
H2SO4 + NH3 ==== HSO4- + NH4+ . Which of the products is a conjugate base?
OH- + CH3COOH ==== CH3COO- + H2O . Which of the products is a conjugate base?
In the following reaction, H,SO3 is the... H2PO4 + H2SO3 = H3PO4 + HSO3 O Conjugate acid of HSO3 O Conjugate base of H3PO4 O Conjugate acid of H3PO4 O Conjugate base of HSO3 O Conjugate acid of H2PO4
Which of these is the strongest base? A) I- B) CO2- 3 C) HPO2- 4 D) H2PO- 4
Which statement is false? The following reaction would help you to decide the answer: CO32- + HSO4 = HCO3 + 2- O Conjugate base of HCO3 is CO32- O Conjugate base of HSO4 is SO42 O Conjugate acid of HSO4 is H2SO4 O Conjugate base of CO3² is HCO3. Conjugate acid of CO32 is HCO3 SO42-