Acid Base Review Packet answers

fl52. What is the approximate pH of a solution labeled 6 x 10-s M HBr?'A +.2 b) 5.s . c) 4.5 d) 9.8':"[-i'i=U,xrD-a&^ pF];*\06{furxl';'5\: q;:'-i3.'',What is the pH of 500.0 mL of solution containing 0.0124 grams of Ca(OH)z?'-,,41 11.04 b) 2.96 c) 9.68 d) 10.83'n\*,\&I*r {..,8. r;- \'--*nl$rDqq54. The pH of a solution is 4.80. What is the concentration of hydro4ide ions in this solution?a) +.2 i to'e ttl b) 3.6 x 10-12 M c) 1.6 x 10-s M 1U63 x 1o-roMpo,i"t;: lf:00 - *,&u = t.J? hri-] "*s'n*lJ * 05*lo*,,:55.Asolutioninwhich[H*]=1x10-oMhasapoHof-andis-:a) 8.0, acidic b) 8.0, basic ''4) 0.0, acidic d) 6.0, basic56. A 0.020 M solution of an unknown weak acid has a pH of 3.70. What is the Ko of this acid?o x 10-6 b) 6.3 x 10-a c) 1.3 x 10-s d) 1.6 x 10-3@,51. What is the approxjlnate pH of a solution labelled 0.05 M HCIO?a) 5'1 w+' c) 3'9 d) 2'r,rlb,r -r $ r--\;qi wnat is the pH of a solution labelled 0.3 M (CII-3)3N? C liJ,)oii ul" "s C iil ;"{v/u) :. ,9.s b) g.z c) 1or8 ' d) 11.659. Which of the following solutions has the lowest pH at 25'C? !" r) I ' J ^..ii ;:;'il'r"oi". nrdroxide i c) 0.2 M hypochtorous acid f:: . 3' -r 'r'rD O.ZM ammonia \rr-"'"'(9 O.t M benzoic acid 1{. ,, . (-p,Y "uii} - =60. A 0.10 M solution of a weak acid, HX, is 0.0597o ionized. Evaluate Ko for the acid.(d)-)3.5 x 10-8 b) 7.0 x 10-6 c) 6.5 x 10-7 d) 4.2 x 10-61'Yii;tution?9);;'{;}istheperce"t'r'T.Ttvorand) 022ro, *r*t*-t^,},Lr, Ll '- r. '"' " '62. Which of the following weak acids ionizes to give the strongestrrqnjugate base? { rt' r"a) HClo b) HF c) CHTCOOH L$fiCNa,s ^o-t1,txru-{ f ,8 x ia-{ l. a }!+ -,d ri,,., -. N:A63. What is K6 for the cyanide ion, CN-' *;-/'a)it.6xl0-s bi 6.2x10r0 c)l.0xl0-7 d)8.4x10-e Fl , r r.>\)i-a'- , .,., f\ l,\r,lrJ r :64. WhatisthepHof a0.50Msolutionof NaNOzL n."'*a) 7.00 b) 1.82 c) 5.52 d) 8.486i?5. f What is the concentration of a sodium acetate solution if the pH of the solution is 9.19?'Yio.go Na b) 2.1 M 6-b.+: u d) 0.068 M66. What is the pH of 0.060 M NH4C1?a) 5.06 b) 5.18 c) 5.r2 d) 5.2;4'A . What is the concentration of ammonium chloride in a solution if its pH is 4.80?a) 0.25 M b) 0.45 M c) 0.30 M d) 0.60 M

i il) rhe value of K6 forlnpo+t \ tn - lJ a p*t u --* iH{,uLll8i Hro;p;.. *ro{,',u^.\oo'iK; : }r}s:nr","b *29. Which of the following graphs describes the relationship between pH and pOH?a)t b)t c)lr Q;$*'pIt*r1,jpllffie_A .#n)*15 97*tt' l{b= E_.*._, r"j**-**':l 1l*19"{:g/ fne value. of K6 for hydrogen oxalate (HC2Oa-) is:b) 5.6 x 1o'2C;- HJ;\ d) l.s x lo-ac);: ii 1] l"lpa-l It-i $u*4tf4ir d l-leSq {sl'4b)d)32.&a)The K6 expression for the reaction of HCzO+- with water is:b)c)ttCst; *" +'p\* c,) -d ll, Crtt,i i $;"\ *1d)Ki,Ko=K,,H), =t/33.a)b)o v34.Which species is/ aie amphiprotic?I and II onlyII and III onlyI and III onlyI, II and IIIgi Fl.{}.s{"'ll[. rF IF{"l'Hil()iLa)b)Which of the following ropresents the ionization of water?tl*{} * }t:, r 3FI' a'3c t.:/../ 3Fl.{} * t'{,{}* t {}t{-3l-1,{) t" (}, F Zl':l'l}"d) ilr(} * i:"t: +.+{.1? gJ,3 ir:'t,.., ;p ,i i , l" ' . ;1 , "-*!ib35.a)oc)d)The relationship shown is the expression for:Ko for HrBO:K6 for HzBO:-Ku for H:BO:K^ for HzBO:-l-\* Bt-t3* *- [-!a.{i f[*-r,,nr:',$*,t rl8tt.n***li-li'i * s " i"r. # u't I *l uY'd+ r-'"-3q36.'q)b)Which of the following represents the reaction between MgO and H2O?h'{gfi^r ll;iJ -+ Mg"{ill*},c) tr,{gfi +' [-l.fi *r [.{_q + lx"ft,? Mgfi "p H"i-) -+ lh'tgtlH +*fi,d) Slg[3 "t- H3("] -+ S,igl{; 'i'{}1yv.t"*h " r,*isi*

17. Which of the following tests could be used to distinguish between HI (aq) and HIO3 (aq)?iD-i the rate of reaction with magnesium metal . -', r,r,r€+/*',_.\.ll),/ pH I ! s,.^r c.^r*c''W the reaction with blue litmus papsrJyf the reaction with phenolphthaleini a)j I and II onlyb)' III and IV only'"l-'1 , i *"i'i"'18. What are the two Bronsted-Lowry bases in this equilibrium?c) I, II, III and IVd) none of these tests will distinguish these substancesIwi'HSO3-,'(aq) + HzPO+ (aq) e SO3 z (aq) + ftPOa,(aq)'ta tt -b*rg-' A..t J, ,.,'(_, a) HSOr-l(aq)'and HzPO+-(aq) c))S6:2 (aq) and HSO3-I (aq)' b) H2PO+- (aq) and HrPO+ (aq)d) HzPO+- (aq) and SO3-2 (aq)u'.utt"1r ily. 19. What wnal ls is the Lne prl pH uI of a suluuull solution ol of -t\l\-13 NiCl: ilrlurr'llilr and yhat luu ion ugrgrlrr[rss determines this? Lllrsi .r=]t, a) solution is basic because of Ni'" (aq) t c) solution is acidic because ofiNi'I(aq).atl-t \ r\ r 1' 'i' r .Xi-.,' 'ib) .solution is basic because of Clt- (aq) 0 solution is aciilic because of Cl-t-'(aq). ,rr'20. Which of the following solutions has a pH less than 7 .00?Q il; NH+Nor (aq) iJ\i,i | ' 1,,4 ,,i . c) LioH (aq) [r:'i' :-b) NaCl (aq) r^,e,,i.'. |'J.i1 ,1,-', ' , d) KCH3COO (aq) ;r," i : {. l'{ l'&cc ..'''''*')$'J*{21.a)j)Which of the following ions will hydrolyz!?yor'.(uq) HAlt:I'- (aq) RSlI{t{}i-'6)r'12. The amphiprotic ions are:|'}) Iandllonlyiite ar a,,*-*ib) II and III only ,,.., -l i' . i 1".,j*'"c) I and III onlyd) I, II and III_il{{"{4!: !S +"i "'-i*t'**; w .} *"'?{" ,f*/+\\ r rr {F6i)r'' taq) tuq) H' Fr' F- F i,, a" *" I*1 nrn Il ,^-' '.,,V cto, '-(aq) * eJ U,F I\t I\ r\l[, P[]j!''-'i '23. What is the pH of a solution of (NH+)zSO+ and what ion determines this?r. a) solution is basic because of NH+t* (aq) .-c), solution is acidic because of NH41* (aq;\'Pb) solution is basic because of SO+2- (aq) al solution is acidic because of SOa2- (aq)r\fi rVUla e ttil!.; "'**} r\E+ 4H*r1'..\-2qb{:t ti{ttxi-24. Which of the followins solutions will have the lowest electrical conductivity?a) 0.1M NaHSog (aq) gJ* | +" iit{ix " c) 0.lM NaF (aq)0.lM H2SO3 (aq)d) 0.1M HF (aq)@25. The conjugate acid of HAsO+2- is:(t) H2AsOa aq)b) AsOa3-(aq)c) H3AsOa (aq)d) H3O* (aq)26.a)b)Which of the following i.0M solutions poqld have a pH greater than 7.00! ir, r.i , J {.\ a r rNaCHICOO (aq) CU 1r^'r'"r- tr ru P 'fC/ NU*CI (aq) AJ t-i ' i r'i 3 t'i t- /* ) :"HCN (aq) *c"i r\ r. tt..:rJ:,'_, o) KNO3 (aq) n t 'J '"'po. Therelationship shown to the fil"iight is thera/.Ko for HrPzOz- (aq)c) Ko for HzPzOz-(aq)b) Ko for H3P2O7-(aq) d) K6 for H2P2O7-(aq).\f5h! 1r)b:.ft L"+'i *3 "'' i !i; P:* +-",-4. iia*"i

tqqq=/ (\ox\7 . Which of the followine substances would be classified as salts?I) NaHCO: -A II) KrPO+1q tru) LiHC:o+l( r',q\\ 5o\-'btrIV) NH+SCN@:I,II,IIIand IVb) I, il and III8. Which of the following is/are polyprotic, strong acids?b HNOrI4 HCIO+ru) HzSO+IV) H:PO+"a)b)9.a)G)I, II, III and [VII and III only10. The conjugate base of HzPOa- isHPo+2 b) HPo+-3@11.@t2.a)The value of K6 for HzPO+- is!.4 x 1.0't2 b) 6.2 x 10-8c) II and IV oniyd) II onlyIII and fV onlyIII onlyWhich of the following will have the Iowest-elffJrij:4.1-ci#luc-!!v!ty? ! e^s+ oA ,t t o

Long Calculation Questions: Be prepared to write out full solutions to questions such as:1 . The pH of a 0. 10 M solution of periodic acid, HIO+ , is | .42. Calculate the Ko for periodic acid.(Ka-0.023)2. Butanoic acid, CgHTCOOH, is found in small quantities in human perspiration and is responsible forvthe foul odour often associated with locker rooms. A 0.0010 molll solution of butanoic acid has a pHof 3.91 at25oC. Calculate the acid dissociation constant (K") of butanoic acid. (Ka - 1.7 x 10-s), \3. What is the percent ionization of a 0.18 M solution of cyanic acid, HOCN?4. What is the percent ionization of 0.20 M CH3NHz (aq) if the pH of the solution is 11.90?(4.47o)(4.0Eo)5. Calculate the pH of a 0.040 M solution of CsBrO (aq). (pH = 10.58)6. Calculate the pH of a 1.00 M solution of N2H5C1 (aq). (pH = 4.06)-rdePractice Multiple Choice Questions: Acids, Bases and Salts1. Which of the following is typical of bases?o\@ conduct electric .urr"nt in solution c) concentration of HrO* > concentration of OH-F)" taste sour*ftvms litmus redfi g{ +rrr$ .*r l.-l-, * pns2. Which of the following is/are properties of strong acids?Y they react with carbonates to produce hydrogen gas4,r-rlIf-{ :,iLt')+fZl4 + !')]they have very high pH/m) they are good electrolytes(a' "l l-i1o)yj they turn phenolphthalein pinka) I, II and III onlyb) I and IV onlyI*b a)pHzSO+oHzSrr.r ce \t-,-^

Sample Questions:1. Acids are protonAcidReview for Acids, Bases and Saltsd./5\'.-\Y.,Ionization Reaction in WaterComplete the following chart for these acids:ConjugateBaseHzSOr f\zso3 € l-|+ -+- I'tiqr A Sttt -HCHOz l+C*o;€ H-+ 4-cl"top* ct-l o> -HPO+2- HPo,t?*;: P0{__t_]j' ?ct*t -HzO l-\, o -iP t+ ts -! *vt: oH *NH+l* iV{=1 *f d l-t* * !u\J-' ,|rJ 14 r1*HCO:r )JL^i1* d fsrn- F l.{HzSO+ l4-, Ssv * 't4 t-j HJoq-CsHsNH* t0 * HC4&{!i)-l!'"\ l-r ct.r-CDdIHPO+2- H pt,a-+ Hro€ Fi Qov- y0 tl - u^ p0" -Fr- f +-11.0 F I,iF+.0H* tlFHrO[l,n{NH,OH fu l-l*oH t l-lao € N1*i0il,+ * oH - ilt-.1"n$,lNH: rrl H. + l-\ro e fU il * L --&r-\i- AJ r-+,, +C5H5N C. A- Nt + l-l.o € C* l-r