Ch 3-Required Problems WP Ch 3-Required Problems A Player W Question 13 of 55 - Ch 3... G is h2o a lewis acid or bas... Ch 3-Required Problems Question 13 of 55 < View Policies Current Attempt in Progress Propose a mechanism for the following transformation: + H + :0H -/1 Curved arrows were used to show reactants only. Choose all arrows which present the correct mechanism. Several choices ar possible. 01 02 3 04 05 0-6 07 H H (7) 6 5

The following reactions illustrate Brnsted acid-base behavior. Complete each equation. a.HI(aq)+?H3O+(aq)+I(aq) b.NH3(l)+?NH4++NH2 c.H2C2O4(aq)+H2O(l)?+HC2O4(aq) d.H2N2O2(aq)+H2O(l)H3O+(aq)+? e.?+H2O(l)H3O+(aq)+CO32(aq)

You may need Table 13-2 to answer the following questions. a. Which is the stronger base, Cl or H2O? b. Which is the stronger base, H2O or NO2? c. Which is the stronger base, CNor OC6H5?

Calculate [OH], [H+], and the pH of 0.40 M solutions of each of the following amines (the Kb values are found in Table 13-3). a. aniline b. methylamine

Sulfanilic acid, which is used in making dyes, is made by reacting aniline with sulfuric acid. (a) Is aniline a Brnsted base, a Lewis base, or both? Explain, using its possible reactions with HCl, BF3, or other acid. (b) Sulfanilic acid has a pKa value of 3.23. The sodium salt of the acid, Na(H2NC6H4SO3), is quite soluble in water. If you dissolve 1.25 g of the salt in water to give 125 ml, of solution, what is the pH of the solution?

8-35 Given the following values of [H3O+), calculate the corresponding value of [OH-] for each solution. (a) 10-11 M (b) 10-4 M (c) 10-7 M (d) 10 M

Which is the strongest acid? OA. В. FO | CH;CHCH,ČOH CH;CH,CHCOH CH3CH,CHČOH CHCHC-COH F F

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

Draw the products of the following acid base reactions and indicate whether products or reactants are favored. CH;CH,00 a. CF3CH2OH + b. H2S Но C. CH3-C=C: H-C d. N-H N-H е. CH3MGB + CH3 1

For each of the following compounds, indicate the atom that is protonated when an acid is added to a solution of the compound.