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IMG_0001_NEW_0045 - :0.77 volt 1 r Fe(CN;ui e Fe(CN)ec...

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aQ"=-F{.e .& P l-s{1, } 21. For a particular reaction the equilibrium constant is 1.50 x l0-2 at 370'C and AI1" is +16.0 kJ at 25"C. Assuming AFl' and l^9' are temperature in6ffi alculare A,s' for th. ;;".;;;. a) -18.8 J/K (B)-ro.o ln< tJ +rs.a rn< d) +10.0 J/K e) none ofthe these 22. For the reaction 2HF(g) =* gr(g) + Fz(g), LG" = 3g.3 kJ, at 1000 K.I{, at this temperature,5.00 moles of HF(g), 0.500 moles of Hr(g), and 0.75 moles of F2(g) are mixed in a 1.00-L container: a)Thesystemisatequilibrium. Nf Wf + Rf'?td' r-aBomeTIF will be fbrmed (from H2 flnd Ft ffso,o. HF will decompose (to yield H2 and F2). = *'.l,.r1 + O83Wf u1,">; x La 'o''#t J#:Jgiventoanswerthisquestion' = ffi1 70 l4t 23. Choose the correct statement given the following information: Fd*(aq) + e- -+ Fe2+(aq) E
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Unformatted text preview: :0.77 volt +1 +r Fe(CN;ui- + e- -+ Fe(CN)ec E":0.36 volt 4$ a"'1u4 is more likely to be oxidized than Fe2* complexed to CN. @fe'.{ag i11ore likely to be reduced than Fe3t complexed to CN_. C) Both a and b are true. d) Complexation of Fe ions with CN- has no effect on their tendencies to become oxidized or reduced. e) None ofthese is Fue. AQo= -n-flAIc = -&)tvf x,6t+ztrs)I^VDq, - 2zW PI 2l.g* =tb -f,vlro5o Og- =_lo I/K 0.20 M Cr3* 24. Consider the galvanic cell shown below (the contents of each half-cell are written beneath each comparfment): 0.50 M Br, 0.10 M Br The standard reduction potentials are as follows: @*3e--+t{f ; Br2(aq) + Z"- -+€E L--,{hat is F for this cell? (g/I.82 v b) 0.36 v c) 1.79 V d) 4.75 V e) 4.40 V E=4.73Y Eo = +1.09 V...
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