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!
Please help! A voltaic cell consists of a Mn/Mn2+ anode (E°= -1.18 V) and a Fe/Fe2+...
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Enter electrons as e A voltaic cell is constructed in which the anode is a Mn Mn+ half cell and the cathode is a Ag Agt half cell. The half-cell compartments are connected by a salt bridge. (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 net cell reaction is: In the external circuit,...
A voltaic cell is constructed from a standard Fe2+|Fe half cell (E°red = -0.440V) and a standard Cl2|Cl- half cell (E°red = 1.360V) Anode Reaction: Cathode Reaction: Spontaneous Cell Reaction: Cell Voltage: ___ V A voltaic cell is constructed from a standard Fe2+|Fe half cell (E°red = -0.440V) and a standard Al3+|Al half cell (E°red = -1.660V). Anode Reaction: Cathode Reaction: Spontaneous Cell Reaction: Cell Voltage: ___ V
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please help and answer all questions
4. What is the cell potential for Mn Mn2||Co2|Co, based on the standard potentials? (2 pts) Mn(s) +Co+2 (aq) → Co(s) + Mn+2(aq) 5. A Student constructed a Mg Mg2||Ag|Ag cell and measured a cell potential of 3.17 V. Calculate the cell potential of the Mg Mg2 half reaction. (2 pts) Mg(s) + 2Ag (aq) - 2Ag(s) + Mg(aq) 6. Will silver metal react spontaneously with HCl(aq) to produce H:()? Explain. (2 pts) 2Ag(8)...
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...