Chem 51A S02 Quiz 2 - e i(we ”W 0” owe/m an on w?“...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: e . i (we; ”W 0”. owe/m an on w?“ 1. (12 points) Fill in all missing spots on the following pKa table with the appropriate Lewis structure, then answer the questions regarding the pK, table on the next two pages. 1+ PK ACID - AA pKa ‘ CONJUGATE BASE Char an ”54; C 4 gr mo -7.3 CH3C02H 1‘3 * -7 m @ “/ng' 11 L1. ’\ ' ' il/ 1 I J' 1" kg ._ C/ .i__ _ \ -2.4 CH3CH20H “:69 \H' "O" \ H3O -1.74 / \ H, C‘ ‘I H l / 0er G [l ‘C ~---Q, ‘ \ 0.64 CCI3C02 i \\0‘ ' 1 l a! ' ,_ CH3C02H 4.8 1 ' ‘*’\\ . A ‘ ti - ,O' f 59* \ 94 NH , (A 4}] l - 3 [A 1—\ \t, e t I ' 1 l t o Lt H .. \ H20 15.? @O—H I I A H l CH3CH20H 17 u "C ,_C’ "09 \ H2 35 NH3 36 a. (2 points) Which compound(s) on the above pKa table are ampboteric'? H“ “939% CuacMu; 111-10111 would be effective? List all of effective bases from your pK table. «.05 CW1 “trfiuegmi‘ W; @1er CH5&20 C3115 1111 1111 v @116 t,111,9,c1111:1e 1161 11112? c. (6 points) Choosing one CLOOYOUT bases from Part b above draw out the ac1d base react1on that results when that base is mixed with H—SCI-IZCH. Label all acids, bases, and conjugate arrows to Show the movement of e's. I’D} . 14" 105 / it “ i b H , .u 0 ”4‘: pg‘ ‘ 1 , x” C Gfibficpgo + ”o \n V 1 [11 1l 111111191115 111111 1111111111 {51151 ‘ (111119111, (111 11111 d. (3 points) What' 1s the approximate ratio of reactants to products 1n your acid- base reaction in Part c (round to theS nearest power often)? What IS chq and AG" 3: 00m temperature? {511911101 1135:100000 ’1 ratio reactants £0 PWthS l .po 1 000 e. (3 points) Why is CH3CHZSH a stronger acid than CH3CH20H? Give a brief explanation * ‘ based on what we have learned about structure and acidity. 11111111111111113 111111111411 all W1 {111 Modal/11W ' 1111111 011111113 61611 61M 13‘ 11111117 Wall” 1 171a 6/011)? 1101 111M011 [108111 b11111 mitt/€115 tn Wale 111111311111141111tl11 1111111 We M11111 @1115 (315 11101111111 0131111111111, and /1 5m “”11 ““9 a wow. mam f. (3 points) Why 18 CHECOZH a stronger acid than CHBCHZOH? Give a brief explanation I xZ’ based on what we have learned about structure and acidity C113C111011 01105111111 5/1/1110 (111491911311 gwt Wrww W c 0111/1 11101111111 01/11112ij omelet/11 1501+ [.11— 5021+ ‘ WV 0 U Mm 111 at 1111111381 11. 4M MC m” (”0.6M (:91 U ,. Z W7 111W WIWQM [ClE’Cé/l ’2 Hg) :11) 61 (1123” Cf” .'1 ’(T U’) . \ . ' K @Mg ' I 9 __./ IO ' (.1 7g (3 points) Why is CC13COZH a stronger acid than CH 3COZH? Give a brief explanation based H;V\AI on what we have learned about structure and acidity H ._ G) W M ‘l 1 nowflfl J AFC/H #3 “11112 Maia/1d 01 1_ fl $111.21!sz m/W 4C1” \00 K0111“ 1151 “WWW ””0 C\\_ W (11+ Band 'C \1 11 afl/‘O Fri/K11 1J1:‘1\?‘1'.1 [L1 ~O Awgmfli 6111016131! ‘1' 3} V0“ 1’11 111 11 _‘ __ Own/1 111,; A 9% [1310.1 04:0?! arid/j {1711“ C"; $1.11, HI . M" ‘. gm“ WWW/L 116’ "L‘: 11Lt ,1 1sz 31111.11 111 1111 1. 1.1111111 511 1 1 '1 h. (3 points) UiWé'n éim lis 11111111111101.1111; and acid base equilibriumL IS Desta IIStha What are 1 151—301 1 151/ "3 111/210 1115.15) 1 ‘1 TI, H H (1,. gm Ml D fifl/W w-flmyg (9153 1 mod/k W Show— Pic (:4 12113101”) ‘7 RV (1‘pr fl“ .. Qjefiw as ”Ammonium Hydroxide"(NI-14+OH ). Explain, using pKa data, why this is false advertising (ie. What are the predominant species at equilibrium?) ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern