Chapter 4.4 practice key
.pdf
School
Columbus State Community College**We aren't endorsed by this school
Course
CHEM 151
Subject
Chemistry
Date
Dec 17, 2024
Pages
5
Uploaded by ProfessorHamster2705
Chemistry 1205 You are an awesome person! Chapter 4.4 Redox reactions In-class work PART A: Write the oxidation number for each atom in the following compounds.() �, t\ ,,,2 HBrO 0 t2 -2PbS +l -IHCl 0Ss SrS 0 Al(s) -f s-3(t 1)r L/ (-z) H3P04 t 3 -1-z +I 1" f Al(OH)3 i_+1) zGI)K202 +-Lt 2 ""-z(-f) COCh +I-IKBr t2 ¼ 't(-2) BaCr04 .f-1 +J z.(-2)HCl02 +J -3GaN +--Z 2(-1)ZnCh 0 Fe(s) 1(t1) -, --i.� 1 r r7 +-ICH30H PART B: Determine which reactant is oxidized and which reactant is reduced in the following redox reactions. r (tt,e e� r-s��"t· 7, 10 O -3 tl H2(g) + 3 N2(g) --+ 2 NH3(g) Oxidized: H d hduced: N c} +i 0 0 ♦3 Fe(N03)2{aq) + 2 Al(s) -. 3 Fe(s)+2 Al(NOJ)s(aq) Oxidimc1: Ales)
Chemistry 1205 You are an awesome person! � In-class work Chapter 4.4 Redox reactions Aluminum � A \ (�) t-3 Ni (fVDJ) 1, t ��) -; 3 Ni ( s) � � A l(ND3) 3 t �!)PART B: Determine if a reaction will happen. If not, write NR. If so, write the products, balance the equation, and then identify what is oxidized and what is reduced. j Fe(N03)2(aq) + � Al(s) -+ J 'Fe())J AuCb(aq) + J Co(s) -+ � A I.) c SJCr(N03)3(aq) + Ni(s) -+ N R Pb(s) + lll(aq) -+ZnBr2(aq) + CaCh(aq) -+ NR AlBn(aq) + Fe(s) -+NR PtCh(aq) + H2(g) ---+Pb(N03)2(aq) + Zn(s) ---+ Pbcs)NaCl(aq) + Sn(s) ---+N R /01)5PbCh(s) + Mn(s) -N R � Pb Cl� Cl) 1'njolvld-eCu(N03)2(aq) + �Na(s) ---+ (,u_(�) t
Chemistry 1205 In-class work You are an awesome person! Chapter 4.4 3. Solid calcium in oxygen gas to produce calcium oxide0 0 �'2--2.0;; -;) J CuOc ) l�)s f'e�ceA? Redox reactions 4. Magnesium solid in aqueous iron(II) chloride to produce solid iron and aqueous magnesium chloride0 t-5.Solid copper in aqueous silver nitrate to produce aqueous copper(II) nitrate and silver metal0 C lt (S�01'i diceJ +-I +-d A-_g N03 l .t.l) f'ekU7J. 6. Aqueous silver nitrate and hydrogen gas to produce solid silver and nitric acid.0
Chemistry 1205 In-class work You are an awesome person! B -I Ch(aq) + 2 Nal(aq) --+ 0 Iz(aq) 0t2 2 HCl(aq) + Ni(s) --+ NiClz(aq) + Chapter 4.4 ..... , 2 NaCl(aq) -2-+4 HzO(l)0 +Hz(g)Oxidized: J:.. -Oxidized: b r Oxidized: N lPbS s Redox reactions Reduced: G / c..Reduced: ff 20 l_0 Reduced: PART C: Write the reaction, balance the equation, and then determine which reactant is oxidized and which reactant is reduced in the following redox reactions. 1.Acetic acid and zinc metal to form aqueous zinc acetate and hydrogen gas.,. , 0 ,t-'2. ,1 u1�cooH(4L) + 2n(5) -7 z� (Ci-t 3[l'.X)�,)(Q�) +t-e�uCQrl o x1'�i 2R&2. Chromium metal with hydrobromic acid to produce aqueous chromium(III) bromide and hydrogen gas0 .,..3 0 � C"cs) t---.J) �Cr Br 3 ( lht) o xi tt' 2.t&
Chemistry 1205 In-class work You are an awesome person! Chapter 4.4 Table 4.5 Activity Series of Metals in Aqueous Solution Metal Lithium l'ota�,lum Barium Oll�lum SoJiulll Magn�lum Aluminum Manganese ZJnc Chromium Iron Cobalt Nickel ·nnI.cad llyorogco .op.P('l' Silver Mercury��--l'lattnum Gold Oxidation Reaction Ll(s) - U"("q) + c-K(s) - K•(11q) + l'. lla(s) - 1Ja1•(111/) + 2c· C11(s) ---+ C,a:r,..(111/) + 2e· Na(s) - Na'(aq) + Mg(.l) __,. MgZ.. (aq) + 2e· Al{s) ,..._ At3•(aq) + 3c" Mn(s) - Mnl•(aq) + 2c Zn(s) - z,,f+(aq) + 2.:-Cr(s} - Crl'{aq} + ac-1'<:(s) - F�•(aq} + 2c-C.o(s) - cd•(aq) + 2c· Nl(s) �) + 2e-Sn{s) - Sn2•(aq) + ie· Pb(s) - f>bU{aq} + 2c· Hz(s) - :rn•(aq) + 2c· cuw __;-t;u�>: � ��--As<s> - Ag•{aq) + c Hg(I) --. Hgi.(aq) + ie_· ___ � l't(s) - Pt2•(aq) + ic-Au(s) -Au3"(a.q) + ac·Redox reactions -N '() V\ jJ'\ ,0. :co � PART A: Which of the following metals can be oxidized by a solution of nickel(II) nitrate? Select all that apply, and then write the balanced equation if so. N I � +Copper X Zinc Cobalt t Potassium t Platinum X Barium[3 o._ ( <,) tNi (N0.1)J '7 ( A,i) N ,· (ND3h, 4;t) -:,t 2" {_f\lDi)z. l'. u�Jt {o(N(h}i{n), 1-J KN03t "'.fJ