Please help! A voltaic cell consists of a Mn/Mn2+ anode (E°= -1.18 V) and a Fe/Fe2+...
Please help!
A voltaic cell consists of a Mn/Mn2+ anode (E°= -1.18 V) and a Fe/Fe2+ cathode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.
A)0.040 M
B)1.8 M
C) 0.24 M
D) None of these choices is correct.
E) 1.1 M
There are other questions on Chegg with this exact question but they each use a value of 0.0591 above n in the nernst equation. Where is this value coming from?! Thought it was RT/F ((8.314*298.15)/96485) but I keep getting 0.0257. Thank you!
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A voltaic cell consists of a Mn/Mn2+ anode (E°= -1.18 V) and a
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A voltaic cell is constructed from a standard Fe2+|Fe half cell (E°red = -0.440V) and a...
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please help and answer all questions
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Voltaic cells chemistry please help with A-C, H and I. 3. A voltaic cell is built...
Voltaic cells chemistry
please help with A-C, H and I.
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This is the third time I've posted this question. Can someone please help me with the...
This is the third time I've
posted this question. Can someone please help me with the top one.
I slipped in a similar example. And the answer is not 2.4135
Consider the following cell reaction Fe(s)2 H ? M)-Fe2(100 M) +H>(g\1.00 atm) If the cell potential at 298 K is 0.307 volts, what is the pH of the hydrogen electrode? pH Consider the following cell reaction Ni(s)2 H (? M) Ni(100 M)Hg100 atm) If the cell potential at 298 K...
help with these please LU 101 is question. Consider the following half-reactions: JE° (V) Half-reaction Hg2+...
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LU 101 is question. Consider the following half-reactions: JE° (V) Half-reaction Hg2+ (aq) + 2e → Hg(0.855V Ca2+(aq) + 2e —— C 0.403V Fe2+ (aq) + 2e -> Fe(s) 0.440V (1) The strongest oxidizing agent is: enter formula (2) The weakest oxidizing agent is: (3) The weakest reducing agent is: (4) The strongest reducing agent is: (5) Will Fe2+(aq) oxidize Hg() to Hg2+ (aq)? O y (6) Which species can be oxidized by Cd²+ (aq)? If...
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Could someone help me? I slipped in a previous example for reference Consider the following cell...
Could someone help me? I
slipped in a previous example for reference
Consider the following cell reaction: Fe(s) + 2 H+(?M —Fe2+(1.00 M)+H gX1.00 atm) If the cell potential at 298 K is 0.307 volts, what is the pH of the hydrogen electrode? pH= Consider the following cell reaction: Ni(s) + 2 H (?M) —+NI+(1.00 M)+H(E)1.00 atm) If the cell potential at 298 K is 0.104 volts, what is the pH of the hydrogen electrode? pH - 1.75 x Incorrect...
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Voltaic cells chemistry
please help with A-C, H and I.
3. A voltaic cell is built from two half-cells using the reduction reactions given below: Sn 2(aq) → Sn(s); Eredn = -0.14 V Cr20;2(aq) → Cr+ (aq) Eredin = 1.33 V a) Write the balanced cathode half reaction in acidic medium: (show work step by step and box your answer) b) Write the balanced anode half reaction and box your answer: c) Write the balanced overall cell reaction and box...
This is the third time I've
posted this question. Can someone please help me with the top one.
I slipped in a similar example. And the answer is not 2.4135
Consider the following cell reaction Fe(s)2 H ? M)-Fe2(100 M) +H>(g\1.00 atm) If the cell potential at 298 K is 0.307 volts, what is the pH of the hydrogen electrode? pH Consider the following cell reaction Ni(s)2 H (? M) Ni(100 M)Hg100 atm) If the cell potential at 298 K...
help with these please
LU 101 is question. Consider the following half-reactions: JE° (V) Half-reaction Hg2+ (aq) + 2e → Hg(0.855V Ca2+(aq) + 2e —— C 0.403V Fe2+ (aq) + 2e -> Fe(s) 0.440V (1) The strongest oxidizing agent is: enter formula (2) The weakest oxidizing agent is: (3) The weakest reducing agent is: (4) The strongest reducing agent is: (5) Will Fe2+(aq) oxidize Hg() to Hg2+ (aq)? O y (6) Which species can be oxidized by Cd²+ (aq)? If...
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Could someone help me? I
slipped in a previous example for reference
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