MT1.f2k7.pg3

MT1.f2k7.pg3 - I-r gre r f.i"" a HZ(g and Br2(l d...

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.12 Use the following to answer questions 12: in. Reaction Na --+ Na+ * e- Agt + e- -+ Ag Fe2+ -+ 2r + Fe2+ CuZ+ + 2r --> Cu Al3+ -+ 3r + Al3+ CIZ + 2r-> 2Cl- F2 + 2r --> 2F- J . Ltan $-rd *' E (volts) +2.71 - 7,+l +o.go o-Eo +0.44 - p'r{4 +0.34 +1.66 - I'Go +1.36 *- *-r};97 Midterm l, Form B-Fall 2007-Johnson 6lu r'-. .-\ /'l' / r+. ts ry]_E Pl:^u:yg19#3qlbq lqlshTed with smallest *,h:l? *Tber coefficients, the i ," coefficientforthesulfgtej€rwilITe ---.* I ,at)+ l. /" O g{ @* @n'*r'a sstr- **-. .=, {r gH?o Al(s) + SO+-(aq) -) ,AlzOr(s) + S'-(aq) v t om,jnl'o^ ' :7' -' + !12' ' Slno a) \ .65 c) 4 d) 6 e) 8 't- z/tt *> *l t& t i 6€- +tl' -/-\ ,_-.- '0<sF}lstreredoxreactionshownin#l5inanacidicorbasicsolution?r' "6 + 2t ; :..soi -.' 3'J' r D+t;O a) rcidic b) basic c) not enough information r t ' t. "'"'r'Mo + BA I -': 'l '{!2 o 1 -; >>+(" *o 16' (6 pls) The products of the electrolvsis of NaBr (aq) are ; go{? -r.€
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Unformatted text preview: I -r gre . r{,,! f .i"", a) HZ(g) and Br2(l). d) Na(s) and Br2O. i k b) N{s) and [email protected]). 1'?f-{lfa(s), O2(g), and H+(aq}. c) B'"(lI HzG), and oH-(a3! V 17. (f0 pe) Illpochtrorous acid is a weak acid (K" :2.9 x l0{) that can be reduced to chloride ions by the 12. (5 pts.) Which ofthe following would be the bestreducingagent? - o r\ do.* f an--tYCle ffi* i, ,t 'tc- -:> Na *2?t{ ffi Nu*'-'{* 13. (7pts) CalculateAGl"f,'orfteelectrochemicalcell, Pt(s) lfJ+,f#+llCu2+lCu(s), fortheproduction ,. of!fl0 g of Cu" assuming thet all concentrations remain at their standard values of 1 .00 u throughout the process. a) 83.0 kJ b) 41.5 kJ c) 3.36 kJ d) 1.31 kJ e) 0.66 kJ following half-reaction : ^rgt- a*.r/ ',1,'a'3 t"at'-HCIO (aq) + rf (aq) ! 2e' --> Cl- (aq) + H2O (l) l-4q fr et' What is E" for this half-reaction? (K*: 1.0 x lO-ra) a) 0.67 V b) 0.82 v c) 1.50 V d) 1.63 v \ ^\'...
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