Tuesday
September 23, 2014

Search: For the following electrochemical cell:

Number of results: 35,719

chemistry- electrochemical cell
What makes this an oxidation-reaction? 3Ag2S+2Al(s) -> Al2S3+6 Ag(s)? Write the half-reactions showing the oxidation and reduction reactions. Identify which is the oxidation reaction and which is the reduction reason. What is oxidized in the reaction? What is reduced? In ...
March 25, 2012 by princess

chemistry
The reaction described by the equation Zn + Hg2Cl2 <--> 2Hg +Zn+2 + 2Cl is run on electrochemical cell. The E^0 of the cell at 25 degrees C is 1.03V. In the same cell, [Cl-]=.10 M and [Zn+2] is unknown, and the measured cell voltage is 1.21V. Compute the value of [Zn+2] ...
April 12, 2012 by Dylan

Chemistry
For the following electrochemical cell, Co(s)/Co2(aq,.0155M)// Ag+(aq,2.50M)/Ag(s) 1.Write the net cell equation. 2.Calculate the following values at 25 degrees celcius. Eocell, Ecell, deltaGo rxn, and delta Grxn
July 25, 2013 by Brianna

Science
describe how a simple electrochemical cell operates? how are electrochemical cells related to batteries?
May 28, 2008 by Bob

CHEMISTRY
The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
November 27, 2012 by sabrina

CHEMISTRY
The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
November 28, 2012 by sabrina: Anyone know how to answer this?

CHEMISTRY
The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
November 28, 2012 by sabrina: Can someone please help!

CHEMISTRY HELP PLEASE!!!
The cell potential of the following electrochemical cell depends on the pH of the solution in the anode half-cell: Pt(s)|H2(g,1atm)|H+(aq,?M)||Cu^2+(aq,1.0M)|Cu(s) what is the pH of the solution if Ecell is 375 mV? I first got .65 as my pH, but it said that it was wrong. ...
March 30, 2013 by clara

Chemistry
Calculate the standard cell potential for each of the following electrochemical cells. Ni^+2(aq)+Mg(s)--->Ni(s)+Mg^+2(aq) I used the e cell values from the back of my book. They are: Ni^+2(aq)+2e--->Ni(s) E^0= -0.23 V Mg^+2(aq)+2e--->Mg(s) E^0= -2.37 I did E^0= -0.23...
April 18, 2010 by Eddie

Chemistry Please help!!
An electrochemical cell that uses the reaction Ti^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of Ecell = +1.19V a. Write the two half-cell reactions. b. Determine the Ered(reduction).
April 16, 2011 by Anna

Chemistry Cell notations
Enter the balanced chemical equation including states that describes the electrochemical cell that is represented by the cell notation as shown. Pt(s) l H2O(l) l O2(g) l H+(aq) ll H+(aq), Cr2O72-(aq), Cr3+(aq) l Pt(s)
December 2, 2010 by Confused

chemistry (electrochemistry)
1) For the following electrochemical cell Cu(s)|Cu2 (aq, 0.0155 M)||Ag (aq, 1.50 M)|Ag(s) write the net cell equation. Calculate the following values using standard potentials as needed. Eo cell and dGo for each reaction...
April 15, 2013 by Andrew

Chemistry
An electrochemical cell is based on the following two half-reactions: Ox: Sn(s)--> Sn^2+(aq, 1.70 M)+ 2e Red: ClO2(g, 0.220 atm)+e --> ClO2^-(aq, 1.80 M) Compute the cell potential at 25 C. I think I'm supposed to use the Nernst Equation for this, but I do not know how ...
April 18, 2010 by Kyle

chemistry
The electrochemical cell described by the cell notation has a standard cell potential of -0.35 V. Calculate the Wmax (kJ) the cell has done if 1893.5 g of MnO42-(aq) (Molar Mass - 118.94 g/mol) forms. Round your answer to 3 significant figures. Pt(s) | Hg22+(aq), Hg2+(aq)||...
June 4, 2010 by eng

Chemistry
An electrochemical cell that uses the reaction Ti^3+ + 2Cr^2+ -> Ti^1+ + 2Cr^3+ Has a standard cell potential of Ecell = +1.19V a. Write the two half-cell reactions. b. Labeling all parts and show the direction of flow of electrons. (Place the anode electrode on the left ...
April 15, 2011 by Anna

chemistry(check my steps)
The electrochemical cell described by the cell notation has a standard cell potential of -0.35 V. Calculate the Wmax (kJ) the cell has done if 1893.5 g of MnO42-(aq) (Molar Mass - 118.94 g/mol) forms. Round your answer to 3 significant figures. Pt(s) | Hg22+(aq), Hg2+(aq)||...
June 3, 2010 by eng

chemistry
Why is it that an electrochemical cell(galvanic cell) cannot operate forever?
February 20, 2010 by LALA

Chemistry
Design an electrochemical cell using Pb(s) and Mn(s) and their solutions to answer the following questions. I just want to see if my answers are correct. I drew the cell already. Thanks 1. Give the line notation for this electrochemical cell. Mn(s) ∣ Mn2+(aq) ∥ Pb2...
March 13, 2010 by Amanda

analytical chemistry
Shown below is a diagram of an electrochemical cell. Write the shorthand, or schematic, notation for this cell
May 4, 2013 by yara

chemistry
Calculate Ecell forthe following electrochemical cell at 25 C Pt(s) |H2(g, 1.00 bar) |H + (aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s)
May 12, 2013 by Lana

Chemistry
For the following electrochemical cell, what is the correct, balanced reaction? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) A. Cu(s) + Cu2+(aq) → Ag+(aq) + Ag(s) B. Cu(s) + Ag+(aq) → Cu2+(aq) + Ag(s) C. Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) D. Cu2+(aq) + Ag(s) &#...
March 21, 2010 by Val

Chemistry
The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e => M is 0.20 V J+ + e => J is 1.00 V. All solutions are 1.00 M and J+ J is connected to M+ M What is E*cell (in V)? * is a 0. It stands for E not
July 12, 2008 by TOM

Chemistry
The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e => M is 0.20 V J+ + e => J is 1.00 V. All solutions are 1.00 M and J+ J is connected to M+ M What is E*cell (in V)? * is a 0. It stands for E not
July 10, 2008 by Tom

Chemistry
Consider an electrochemical cell based on the following cell diagram: Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard reduction potential E(...
November 15, 2010 by Diana

chemistry
A balanced equation that represents an overall cell reaction is shown. Choose the cell notation which corresponds to the electrochemical cell that is described by this equation. 2H2O(l) → 2H2(g) + O2(g) i dont get why the answer is this. How can OH- appear in both sides ...
June 3, 2010 by eng

science
What energy changes occur in an electrochemical cell when electric current flows from it? This is what I put down but I am not sure if it is right... In a primary cell, chemical reactions use up some of the materials in the cell as electrons flow from it. This causes an energy...
December 10, 2007 by helpmeplease

Chemistry
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction
February 27, 2012 by Katie

Chemistry
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing tin and silver: Sn(s)|Sn2 (aq)||Ag (aq)|Ag(s) what is the equation for cathode, anode, and net cell reaction
February 27, 2012 by Katie

Chemistry
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will decrease C)dE...
March 23, 2010 by Val

chemistry
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will decrease C)...
March 23, 2010 by Val

chemistry
an electrochemical cell uses Al and Al+3 in one compartment and Ag and Ag+ in the other write a balanced equation for the rxn that will occur spontaneously in this cell would that just be Al + Al+3 + 2e --> Ag + Ag+ ?
January 18, 2009 by erin

chemistry
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for: O2 + 2H20 + 4e- ---------> 4 OH- 0.40 V
March 9, 2010 by anne

chemistry
The electrochemical cell described by the cell notation has a standard emf (electromotive force) of -0.68 V. Calculate the value (kJ) for the standard free energy change of the cell. Round your answer to 3 significant figures. Pt(s) l MnO2(s) l MnO4-(aq), H+(aq) ll H+(aq), VO2...
June 6, 2010 by me

chemistry
I did a lab using an electrochemical cell to establish a relationship between cell potential and concentration. I derived two equations from lines of best fit. One is Cell potential of Ag vs. Cu Concentration: y = -0.04520x+0.5515. The other is cell potential of Zn vs. Cu ...
November 10, 2010 by Morgan

CHEMISTRY
The two half-reactions for the LeClanche dry cell battery are shown below. Describe the direction of spontaneous electron flow in this electrochemical cell. Zn(s) ---> Zn2+(aq) + 2e- 2NH4+(aq) + 2e- ---> 2NH3(g) + H2(g)
May 10, 2013 by Alicia

Chemistry
How would you start and finish these questions by a step by step process? Does Amp equal to Joules? 1. How many grams of aluminum can be produced by the electrolysis of aqueous aluminum chloride by a current of 5.00 amps for 5.00 hours? 2. Consider the following ...
April 6, 2014 by Erika

chemistry
Calculate the standard cell potential for each of the electrochemical cells? 2Ag+(aq)+Pb(s)→2Ag(s)+Pb2+(aq) E∘cell......V? 2ClO2(g)+2I−(aq)→2ClO−2(aq)+I2(s) E∘cell......V? O2(g)+4H+(aq)+2Zn(s)→2H2O(l)+2Zn2+(aq) E∘cell......V?
April 11, 2014 by John

Chemistry
For the following electrochemical cell Cu(s)|Cu2 (aq, 0.0155 M)||Ag (aq, 3.50 M)|Ag(s) write the net cell equation. I presume it is Cu + 2Ag^2+ --> Cu2+ + 2Ag Calculate the following values at 25.0 C using standard potentials as needed. Eocell = ? dGorxn = ? Ecell = ? dGrxn...
April 5, 2014 by Aki

Chemistry --Need Help!!
Ive posted twice, but no one's answered yet...I could really use any kind of guidance--particularly for the 1st question :) 1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e...
March 24, 2010 by Val

General Chem - Electrochemistry
Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water. The standard reduction potential for O2 + H20 + 4 e- ----> 4OH- is 0.40 V For other possible half-reactions, see your textbook...
December 12, 2007 by Anne

Inorganic chemistry
The following electrochemical cell has the potential of +0.617V at 25 degrees Celsius Pt ! H2(g, 1.00 atm) ! H+ (aq, 1.00M !! Ag^+(aq) ! Ag The standard reduction potential, E naught, of Ag^+ = 0.799V. What is the Ag+ concentration?
April 11, 2009 by Steve

Chemistry2
An electrochemical cell is created using gold and magnesium half-cells. a. Determine which half-cell will undergo oxidation and which will undergo reduction, identify anode and cathode, and calculate the voltage for the cell. You do not need to diagram the cell. b. If the mass...
November 27, 2010 by Adam

Chemistry
An electrochemical cell is created using gold and magnesium half-cells. a. Determine which half-cell will undergo oxidation and which will undergo reduction, identify anode and cathode, and calculate the voltage for the cell. You do not need to diagram the cell. b. If the mass...
November 30, 2010 by Jeffery

Chemistry
Calculate the standard cell potential for each of the electrochemical cells? What would the answers be to something like this? If someone could work out the answer I would really appreciate it. My online hw keeps telling me its wrong. 2Ag+(aq)+Pb(s)→2Ag(s)+Pb2+(aq) E&#...
April 12, 2014 by John

Chemistry
Calculate the standard cell potential for each of the electrochemical cells? What would the answers be to something like this? If someone could work out the answer I would really appreciate it. My online hw keeps telling me its wrong. 2Ag+(aq)+Pb(s)→2Ag(s)+Pb2+(aq) E&#...
April 12, 2014 by John

Chemistry
Calculate the cell potential for the electrochemical cell consisting of Ag metal in a 0.500 M AgNO3 solution and Fe metal in a 3.0 M Fe(NO3)3 solution.
August 8, 2010 by Alex

Chemistry
Calculate the electrical voltage of an electrochemical cell using Pb(s) and Co(s) as electrodes along with their appropriate solutions. Co2+(aq) + 2e- --> Co(s) -0.28 V Pb2+(aq) + 2e- --> Pb(s) -0.13 V The oxidation reaction is Co(s) --> Co2+(aq) + 2e- +0.28V E0 net(...
March 18, 2010 by Melissa

Chemistry
Determine the potential (in V) of an electrochemical cell using a gold electrode and gold (III) [0.0243 M] solution in combination with a manganese/manganese (II) [0.00567 M] half cell How on earth would I do this question? I just know Au(3+) + 3e- = Au and E = 1.22 V
June 10, 2009 by Joe

chemistry
The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq) ll Sn4+(aq), Sn2+(aq...
November 26, 2010 by flame

chemistry
The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq) ll Sn4+(aq), Sn2+(aq) ...
November 27, 2010 by flame

chemistry
The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq) ll Sn4+(aq), Sn2+(aq) ...
November 28, 2010 by flame

chemistry
Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing indium and cadmium: This is what I have so far: anode: In(s) --> In^3+ + 3e- cathode: Cd^2+ + 2e- --> Cd (s) Need help writing the balanced net ...
April 14, 2013 by Lexi

Chemistry
The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of -0.35 V. Calculate the value (J) for the Wmax that the cell can do under standard conditions. Round your answer to 3 significant figures. 2MnO4-(aq) + Hg22+(aq) &#...
December 3, 2010 by Roger

chemistry
Base your answer on the following redox reaction, which occurs spontaneously in an electrochemical cell. Zn + Cr3+ --> Zn2+ + Cr Write the half-reaction for the reduction that occurs.
June 8, 2009 by Mike

Chem 1LC
Could someone please help me with this problem!!?!? Thanks you so much!!! The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e M is 0.50 V J+ + e J is 1.20 V. All solutions are 1.00 M and J+ J is connected to M+ M. A) What is E...
May 3, 2010 by Alex

Chemistry - Cell Notation
Enter the balanced chemical equation including states that describes the electrochemical cell that is represented by the cell notation as shown. Pt(s) | F-(aq) | F2(g) || Cl-(aq), AuCl4-(aq) | Au(s) I'm having trouble balancing this... I get AuCl4- + 2F- --> Au + 4Cl- + F2...
May 26, 2009 by Kay

Inorganic chemistry
Calc1ulate E for the following electrochemical cell at 25 degrees Celsius Pt(s) ! Sn^2+ (aq, 0.50M), S^4+(aq, 0.50M !!I^-(aq, 0.15M) ! AgI(s) ! Ag(s)! given the following standard reduction potentials. AgI(s) = e^- ==> Ag(s) + I^-(aq) E naught = -0.15V Sn^4+(aq) + 2e^- ==&...
April 11, 2009 by Steve

Science
Were can i find a coloured diagram of a aluminum-nickel electrochemical cell?
July 15, 2011 by Claire

College Chemistry (DrBob222)
Use the Nernst equation to calculate the iron (II) concentration for the following iron/copper electrochemical cell when [Cu2+] = 0.012 M and Ecell = 0.750 V at 35C. Cu2+ (aq) + Fe (s) --> Cu (s) + Fe2+ (aq)
April 6, 2014 by Adrik

chemistry
The electrochemical cell described by the cell notation has an Eo of -0.37 V. Calculate the maximum electrical work (kJ) the cell has done if 331.73 g of Cu(s) (Molar Mass - 63.55 g/mol) reacts. Round your answer to 3 significant figures. Cu(s) l Cu+(aq) ll Sn4+(aq), Sn2+(aq) ...
November 28, 2010 by flame

chemistry
Discuss the spontaneity of an electrochemical reaction in terms of its standard emf (Ecell)
July 22, 2010 by Jin

AP Chemistry
A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ] were equal to 1.0 M, ...
April 16, 2012 by Brittany

AP Chemistry
A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ] were equal to 1.0 M, ...
April 16, 2012 by Brittany

Chemistry
Hi, if anyone can give me help for any part of the question that would be great! I know how to draw the cell diagram, but am not sure what the half-reactions would be.... Here is the question: Give the cell diagram notation of the electrochemical cell that could be used to ...
December 12, 2007 by Anne

chemistry
A balanced equation that represents an overall cell reaction is shown. Choose the cell notation which corresponds to the electrochemical cell that is described by this equation. a) Sn2+(aq) + 2Cu+(aq) → Sn4+(aq) + 2Cu(s) b) Pt(s) l Sn2+(aq), Sn4+(aq) ll Cu+(aq) l Cu(s) c...
November 15, 2011 by Bob, NEED YOUR HELP

chem 1046
An electrochemical cell is based on these two half-reactions: Ox: Sn(s) → Sn2+(aq, 1.74 M) + 2 e- Red: ClO2(g, 0.120 atm) + e- → ClO2-(aq, 1.44 M) Calculate the cell potential at 25C E Sn>Sn2+ = -.14 E ClO2 = .95
July 13, 2012 by Anonymous

Chem 1046
An electrochemical cell is based on these two half-reactions: Ox: Sn(s) → Sn2+(aq, 1.74 M) + 2 e- Red: ClO2(g, 0.120 atm) + e- → ClO2-(aq, 1.44 M) Calculate the cell potential at 25C E Sn>Sn2+ = -.14 E ClO2 = .95
July 14, 2012 by Anonymous

Chemistry
The part of an electrochemical cell that carries electrons to a reacting ion is a(n) (1) cathode (2) anode (3) electrode (4) electrolyte
April 22, 2014 by Brian

chemistry
The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of -4.05 V. Calculate the maximum electrical work (kJ) the cell has done if 6.8500 mol of F2(g) (Molar Mass - 38.00 g/mol) forms. Round your answer to 3 significant ...
December 4, 2011 by j

Science
Please compare and contrast the electrochemical events involved in the initiation and propagation of an action potential with the electrochemical events involved with the initiation of muscle contraction in skeletal muscle. Be sure to describe the electrochemical changes in ...
January 21, 2013 by Jack

chemistry, please help
say that I measured the voltage of electrochemical cells: Zn/Cu: -0.961 V Pb/Cu: -0.360 V Ag/Cu: 0.425 V Sn/Cu: -0.275 V Fe/Cu:-0.516 V Directions: If you assign Cu an arbitrary electrode potential value of 0.00 V, the numbers above are the reduction potentials for the other ...
March 11, 2009 by jen

chemisry.Electrochemical Measurement of Concentrat
A calibration curve to show how the cell potential varies with [Cu2+] may be constructed. A plot of cell potential (in V, with the same sense as in question 1) versus log10[Cu2+] should yield a straight line. What is the slope of this line? The answer should be -0.0591/2 but ...
April 9, 2012 by Mahtab

College Chemistry
A Galvanic cell consists of Mg electrode in a 1.0 mol L -1 Mg(NO3)2 solution and a Ag electrode in a 1.0 mol L-1 AgNO3 solution. Calculate standard emf for the spontaneous reaction of this electrochemical cell at 25 C, given that the standard reduction potential Eo for Ag+ is...
October 27, 2010 by Elleni

Chem
The electrochemical cell described by the balanced chemical equation has a standard emf of -0.25 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures. MnO2(s) + Pb2+(aq) → Mn2+(aq) + PbO2(s) St. Red. Pot. (V) PbO2/Pb2...
November 14, 2011 by Jess

Chem Check Please!!!
Calculate for the electrochemical cell below, Ag(s) | AgCl(s) | Cl(aq) || Cu2+(aq) | Cu(s) given the following standard reduction potentials. Cu2+(aq) + 2 e -> Cu(s) E = +0.337 V AgCl(s) + e -> Ag(s) + Cl(aq) E = +0.222 V a. 0.115 V b. 0.107 V c. +0...
May 6, 2014 by Anonymous

AP CHEMISTRY
A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e− -> Cu(s) I2(s) + 2 e− -> 2 I−(aq) The cell is operated at 298 K with [Cu+ ] = 2.7 M and [I− ] = 2.7 M. (a) Determine E for the cell at these concentrations. (b...
April 6, 2012 by MIKE

AP CHEMISTRY
A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e− -> Cu(s) I2(s) + 2 e− -> 2 I−(aq) The cell is operated at 298 K with [Cu+ ] = 2.7 M and [I− ] = 2.7 M. (a) Determine E for the cell at these concentrations. (b...
April 14, 2012 by DAN

Chemistry/Redox Reactions
An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminium metal electrode immersed in a solution with [Al3+] = 1.0 M. Sodium hydroxide is added to the aluminium compartment causing Al(OH...
August 18, 2008 by Hanna

AP Chem
An electrochemical cell consists of a nickel metal electrode immersed in a solution with [Ni2+] = 1.0 M separated by a porous disk from an aluminum metal electrode. (a) What is the potential of this cell at 25C if the aluminum electrode is placed in a solution in which [Al3...
April 1, 2011 by Halie

chemistry
The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e --> M is 0.30 V J+ + e --> J is 0.40 V. All solutions are 1.00 M and J+ / J is connected to M+ / M. What is Ecell (in V)? Which species is easier to oxidize? The ...
May 12, 2008 by so confused

chemistry
The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e ==> M is 0.10 V J+ + e ==> J is 0.30 V. All solutions are 1.00 M and J+/J is connected to M+/M. 1. What is Ecell (in V)? 2. Which species is easier to oxidize? 3. The ...
April 21, 2008 by Lily

chemistry
Calculate the pH for the hydrogen half-cell of the following voltaic cell if the observed cell voltage is 1.00 V. Mn|Mn2+(1.00 M)||H+(pH =?), H2(1.00 atm)|Pt
March 15, 2014 by mary

SCIENCE!!!
Explain how each of the following cell's structure is related to it's function Red blood cell- Nerve cel- Musle cell-
November 22, 2008 by Ella

Chemistry
I'm having trouble with the following question, any help would be greatly appreciated. A voltaic cell consists of a Zn/Zn^2+ half-cell and a Ni/Ni^2+ half-cell at 25 C . The initial concentrations of Ni^2+ and Zn^2+ are 1.30 M and 0.100 M , respectively. What is the cell ...
April 17, 2011 by Rick

Chemistry
1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each of the following ...
March 5, 2008 by Anonymous

Chemistry
1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each of the following ...
March 5, 2008 by Alex

Chemistry
Calculate the cell potential for the following reaction as written at 25.00 C, given that [Zn2 ] = 0.842 M and [Ni2 ] = 0.0100 M. Standard reduction potentials can be found here. reaction: Zn(s)+Ni^2+(aq)--->Zn^2+(aq)+Ni(s) standard reduction Zn: -.76 standard reduction Ni...
May 4, 2014 by Sophie

medicine
What is the main difference between a stem cell and a cancer cell? A. A stem cell grows at a faster rate than a cancer cell B. A stem cell obeys signals to stop growth, but a cancer cell doesn't C. A stem cell is usually external; a cancer cell is usually internal D. A stem ...
August 7, 2010 by Beth

Chemisty
PLEASEHELP i am having a major difficulty finding the answer to this question Give the balanced equation with states for both the cathode and the anode reactions of the electrochemical cell shown. Be sure to include electrons in your equations. Pt(s) l F-(aq) l F2(g) ll Cl-(aq...
December 2, 2010 by Raffi

Science
which of the following is a function of DNA 1)controlling the production of proteins in the cell 2)breaking down proteins in the cell 3)producing energy from food molecules inside the cell 4)controlling substances that enter and leave the cell 5)joining adenine with thymine ...
February 11, 2013 by Freeman

Chemistry
Is electroplating an industrial electrochemical process? What would be an industrial electrochemical process?? electric generator or electrolysis?
May 20, 2013 by scilover

science
Which of the following is NOT found in animal cells? a. cell wall b. cell membrane c. organisms d. prokaryotes I think the answer is cell wall, but I'm not sure. Cell walls are only found in plant cells as far as I know. yes, a
March 25, 2007 by jose

Math
Consider the following spreadsheet: What formula would you use to calculate the number in cell B2? Cell A Cell B Cell C Cost of item 4% tax cost of before tax item with tax $130 5.2 $135.2 $150 6 $156 I do not know how to write a formula for calculate cell B.
April 16, 2010 by BWB HELP

Math
Consider the following spreadsheet: What formula would you use to calculate the number in cell B2? Cell A Cell B Cell C Cost of item 4% tax cost of before tax item with tax $130 5.2 $135.2 $150 6 $156 I do not know how to write a formula to calculate cell B.
April 16, 2010 by BWB HELP

science
Assignment says label the parts of a plant cell. I'm blind so I'm going to write the names and put their functions. Cell wall, strenghthens the cell. vacuole is where the cell sap is produced. cell membrane is on outside on the cell. It controls what goes in and out of the ...
October 21, 2009 by Claire

Chemistry
Calculate ΔG at 298 K for the electrochemical cell consisting of Au metal in a 0.00500 M Au(NO3)3 solution and Cu metal in a 0.950 M Cu(NO3)2 solution.
August 8, 2010 by Allie

Science 7R Q2
What is the difference between a plant cell and an animal cell? a. plant cell have cell wall a animal cell don't b. a plant cell have cholroplast and a animal cell don't c. plant cell have a huge vacuole and a animal cell have a small vacuole d. animal cells have lysosomes but...
January 16, 2012 by Laruen

chem
The full inoic equation for an electrochemical cell is Br2 + Zn yields 2Br- + Zn2+. write the half reaction that occurs at the anode and the half reaction that occurs at the cathode
June 7, 2010 by Jessica

CHEMISTRY
Given the following standard reduction potentials in acid solution: MnO4- + 8 H+ + 5 e- Mn+2 + 4 H2O Ecell = 1.51 V Co+2 + 2 e- Co Ecell = -0.28 V Cr+3 + 3 e- Cr Ecell = -0.74 V The strongest oxidizing agent listed above is: Cr3+. Cr. Mn2+. Co2+. MnO4
September 9, 2010 by lucylu

biology
Can someone explain to me how a plasma/cell membrane carry put the following functions? i've searched the net and can't seem to find anything on them * Compartmentalization of the cell into organelles * Organization of biochemical pathways Attain optimal [metabolite] in the ...
November 25, 2008 by kimora

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members