According to hard-soft acid-base theory, which pair below would preferentially bind to PbS surface? O NH3 and (CH3)2Zn NH3 and (CH3)2Hg ASH3 and (CH3)2Zn ASH3 and (CH3)2Hg

8:01 Back Module 3 Homework.docx that structure affects acranty, with a greater degree of resonance, the conjugate base becomes more stabilized, meaning that the acid form is more acidic. Draw appropriate resonance structures to show why one compound in the pair is more acidic. F₂C OH Bond Strength and its effects on acidity HSH HO Rank the following acids in order of increasing acidity (1 being the least acidic) and support each answer, briefly. Observed Trend: HF OH pka = 7 pka 15.7 Trends can be seen within the periodic table that can dictate acidity based on bond. strength.; all things being equal, the stronger the bond the weaker the acid. HCI Additional Problems Dashboard Calendar H₂C OH HBr weakest acid strongest acid Explain this observed trend based on bond strength and bond length. To Do HI Show by writing appropriate resonance structures that the two compounds shown form the same conjugate base upon innination Whinh atam in the naminaata hana Douf haava 44 Notifications MeOH…

Rank the acidity of the molecules A through E, shown. Select the correct response from each of the pull-down menus. A HH N H3C H B The most acidic molecule is [Select] The second most acidic molecule is [Select] The third most acidic molecule is [Select] H3C The fourth most acidic molecule is [Select] The least acidic molecule is [Select] C H + H3C H D • H₂C E H

Use the information in the pK table to rank the molecules in order of decreasing basicity. For example, select "1" in the second column for the strongest base a and "2" for the next strongest base and so on. CH3 HS F CH,CO, Molecules (Choose one) (Choose one) (Choose one) (Choose one) X Ś CHA 4 NH₂ H₂ CH3NH₂ 2 48 38 36 33 pk table pKa CH,NH, CH₂SH 10.4 H₂O* HCN + 10.6 9.4 NH H₂O 15.7 H₂S CH₂OH 15.5 CH,CO,H 4.76 9.2 7.00 HF CH₂OH₂ H₂SO4 HC1 HBr 3.17 -1.7 -2.2 -3.0 -7 -9