{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

3.1 - ’22 E7 1 Chemistry 139 Test 3 Summer Session it...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ’22 E7? 1 -- Chemistry 139 Test 3 Summer Session it 2007 Write the letter of the most correct choice-1111116: blank provided Only one answer is acceptable. Just circling the choice will. not be Counted Do 1101. separate the last. page of this exam or 10 points will be deducted from the final grade 011.1he 12112111112 @) l LFrom the following reduction half— reactions _ would be the best oxidizing agent .11: a)"; and would be the best reducing agent Lilia? .3 MM“ :6” (fax 21”} Oxfdelu‘pn 2+ _ '1 . ' " W13 M It‘d 1'45“” '1" a? 1'5 1 I C11 (aq) '+ Ze —~> (311(3) ‘ . - ~ E0 : +0.34 v ,—-—----" arm’— Los; "9 11.1411}an + Cr2072 (aq) + 6c —-> 2Cr3 +(aq) + 7H;O(l) E0 = +1.33 v (Ed-'1'” made 12111 Zn (aq) + 2e .—> 211(3) E° : —O.76 v Om 1211/ A13 (aq) + 3e —> 111(3) 1 21%: . . m ”gm eaméa V. 1111-104 (aq) + 8H (aq) + Se 3 Mn (aq) + 4111110) ‘ @3531”; 1. 1.11011... a-Mb (mm d 111% 63.1611 2112+ _fl;—ugfl 24Which reaction below IS not correctly represented? :1. H200) _1 H (aq)+H0(ag’?§ W” b. lBaCles)‘r “A Bag (aq) + 2Cl (aq) C. + 110(an 51/ d B C 'E"i '[E' 1'1: -. . HC2H302(aq) + H O —> H3O+ (aq) + {321—1302 11131011119) + 1120(1) —> 1130(aq1 + 131041111) 3.101 Which of the following condltlons would. not be sufficient to determine the spontaneity of a reaction at 25°C? "-‘ ‘ ’bé «eff . .' @AH(+) and AS(+) " ' " W.‘ . _ .1'1. 5 ;. . /‘ r f/'/ P: viii” Li} I" 11/ _ eAHflé} ). 1/ c. 11110) and 131+) . . . 4 .Q The purpose of the salt budge in an elecfrochemi'cal cell is to a. maintain electri .. neuiralit "1n the half— cells Via Ini_ -rati011 of ions. .. prov1de a source oIIf ions to react at? Jthe anode and cathode. d provide a means for electrons to travel from the anode to the cathode. .provide a means for electrons to travel from: the cathode to the anode. ‘ ":ELZ 1‘21}; 111‘ ...
View Full Document

{[ snackBarMessage ]}