Homework Answers
1)
a)
Oxidation takes place on Anode.
The one with smaller Eo value will be oxidised.
So, the anode reaction is:
Cr(s) —> Cr3+(aq) + 3 e-
b)
Reduction takes place on Cathode.
The one with greater Eo value will be reduced.
So, the Cathode reaction is:
Fe3+(aq) + e- —> Fe2+(aq)
C)
Overall reaction is:
3 Fe3+(aq) + Cr(s) -> 3 Fe2+(aq) + Cr3+(aq)
d)
Eo cell = Eo cathode - Eo anode
= 0.771 V - (-0.740 V)
= 1.51 V
Answer: 1.51 V
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A voltaic cell is constructed from a standard Cr3Cr half cell (Ered=-0.740V) and a standard Fe3+|Fe2+...
Enter electrons as e'. A voltaic cell is constructed from a standard Al?*Al half cell (Ered...
Enter electrons as e'. A voltaic cell is constructed from a standard Al?*Al half cell (Ered - -1.660V) and a standard F2F half cell (Ered 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or ($). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V.
Enter electrons as e A voltaic cell is constructed from a standard Mg2+ Mg half cell...
Enter electrons as e A voltaic cell is constructed from a standard Mg2+ Mg half cell (E®red = -2.370V) and a standard Fe Fe2+ half cell (E®red -0.771V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: + The spontaneous cell reaction is: + + The cell voltage is V.
A voltaic cell is constructed from a standard Co2+ Co half cell (Eºred = -0.280V) and...
A voltaic cell is constructed from a standard Co2+ Co half cell (Eºred = -0.280V) and a standard Ar Al half cell (Ered=-1.660V The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is Enter electrons as e A voltaic cell is constructed from a standard Ni Ni half cell (Ered -0.250V) and a standard BryBr half cell (Ered =1.080V). (Use the lowest possible coefficients. Use the pull down boxes to specify states such...
Enter electrons as e A voltaic cell is constructed from a standard Fe? Fe half cell...
Enter electrons as e A voltaic cell is constructed from a standard Fe? Fe half cell (Ered -0.440V) and a standard Izt half cell (Ered -0.535V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is Enter electrons as e. Use smallest possible integer coefficients. If a...
A voltaic cell is constructed from a standard Cr3+Cr half cell (E® red = -0.740V) and...
A voltaic cell is constructed from a standard Cr3+Cr half cell (E® red = -0.740V) and a standard Cu2+ Cut half cell (E® red = 0.153V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: DB + + The cathode reaction is: The spontaneous cell reaction is: + 1 D- ODO The cell voltage is v.
Enter electrons as e A voltaic cell is constructed from a standard Hg Hg half cell...
Enter electrons as e A voltaic cell is constructed from a standard Hg Hg half cell (Ered 0.855V) and a standard F2 F half cell (Ered 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (ag) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V
Enter electrons as e red 2.870V). A voltaic cell is constructed from a standard Ni? Ni...
Enter electrons as e red 2.870V). A voltaic cell is constructed from a standard Ni? Ni half cell (Ered -0.250V) and a standard F2/F half cell (E° (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: + <> The spontaneous cell reaction is: + The cell voltage is
A voltaic cell is constructed from a standard Cu2+Cu half cell (E"red = 0.337) and a...
A voltaic cell is constructed from a standard Cu2+Cu half cell (E"red = 0.337) and a standard Fr half cell (E°red = 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aą) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: ulles such as (aq) a The anode reaction is: The cathode reaction is: The spontaneous cell reaction is:...
A) B) C) Use the References to access important values if needed for this question. Enter...
A)
B)
C)
Use the References to access important values if needed for this question. Enter electrons as e. Use smallest possible integer coefficients. If a box is not needed, leave it blank. A voltaic cell is constructed from a standard Fe2+ Fe half cell (Eºred = -0.440V) and a standard Mn2+ Mn half cell (Eºred =-1.180V). The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V. Submit Answer Retry Entire Group...
please can someone help me with these questions.. thanks so much A voltaic cell is constructed from a standard H H,...
please can someone help me with these questions.. thanks so
much
A voltaic cell is constructed from a standard H H, half cell (Ered=0.000V) and a standard C1, CI half cell (Ered 1.360V) (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (8). If a box is not needed, leave it blank.) req 2reg The anode reaction is: 2rea 32rea its2req The cathode reaction is: pts 2rea The spontaneous cell reaction is: The...
Enter electrons as e'. A voltaic cell is constructed from a standard Al?*Al half cell (Ered - -1.660V) and a standard F2F half cell (Ered 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or ($). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V.
Enter electrons as e A voltaic cell is constructed from a standard Mg2+ Mg half cell (E®red = -2.370V) and a standard Fe Fe2+ half cell (E®red -0.771V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: + The spontaneous cell reaction is: + + The cell voltage is V.
A voltaic cell is constructed from a standard Co2+ Co half cell (Eºred = -0.280V) and a standard Ar Al half cell (Ered=-1.660V The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is Enter electrons as e A voltaic cell is constructed from a standard Ni Ni half cell (Ered -0.250V) and a standard BryBr half cell (Ered =1.080V). (Use the lowest possible coefficients. Use the pull down boxes to specify states such...
Enter electrons as e A voltaic cell is constructed from a standard Fe? Fe half cell (Ered -0.440V) and a standard Izt half cell (Ered -0.535V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is Enter electrons as e. Use smallest possible integer coefficients. If a...
A voltaic cell is constructed from a standard Cr3+Cr half cell (E® red = -0.740V) and a standard Cu2+ Cut half cell (E® red = 0.153V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: DB + + The cathode reaction is: The spontaneous cell reaction is: + 1 D- ODO The cell voltage is v.
Enter electrons as e A voltaic cell is constructed from a standard Hg Hg half cell (Ered 0.855V) and a standard F2 F half cell (Ered 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (ag) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V
Enter electrons as e red 2.870V). A voltaic cell is constructed from a standard Ni? Ni half cell (Ered -0.250V) and a standard F2/F half cell (E° (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (). If a box is not needed, leave it blank.) The anode reaction is: + The cathode reaction is: + <> The spontaneous cell reaction is: + The cell voltage is
A voltaic cell is constructed from a standard Cu2+Cu half cell (E"red = 0.337) and a standard Fr half cell (E°red = 2.870V). (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aą) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: ulles such as (aq) a The anode reaction is: The cathode reaction is: The spontaneous cell reaction is:...
A)
B)
C)
Use the References to access important values if needed for this question. Enter electrons as e. Use smallest possible integer coefficients. If a box is not needed, leave it blank. A voltaic cell is constructed from a standard Fe2+ Fe half cell (Eºred = -0.440V) and a standard Mn2+ Mn half cell (Eºred =-1.180V). The anode reaction is: The cathode reaction is: The spontaneous cell reaction is: The cell voltage is V. Submit Answer Retry Entire Group...
please can someone help me with these questions.. thanks so
much
A voltaic cell is constructed from a standard H H, half cell (Ered=0.000V) and a standard C1, CI half cell (Ered 1.360V) (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (8). If a box is not needed, leave it blank.) req 2reg The anode reaction is: 2rea 32rea its2req The cathode reaction is: pts 2rea The spontaneous cell reaction is: The...
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