Search: Al(s) + Pb2+(aq) !

Number of results: 12,629

Chemistry
Which is a possible electrochemical cell, shown in correct notation? A. Cd(s) | Cd2+(aq) || Cu2+(aq) | Cu(s) B. Mg(aq) | Mg2+(aq) || Pb2+(aq) | Pb(aq) C. Ag(s) | Ag2+(aq) || Pb3+(aq), Pb2+(aq) | Pt(s) D. Ag2+(s) | Ag2+(aq) || Pt(s) | Pb3+(aq), Pb2+(aq) E. Fe(s) | Fe3+(aq) || ...
Monday, May 21, 2012 at 12:53pm by Alex Fischer

chemistry
Given the following list from the activity se- ries of metals (from most active to least ac- tive) K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg which reaction would you NOT expect to oc- cur? 1. Na(s) +Mn2+(aq) ! Na+(aq) +Mn(s) 2. Co2+(aq) + Al(s) ! Al3+(aq) + Co(s) 3. Cd(s) + Pb2+(aq...
Thursday, September 29, 2011 at 10:14pm by Chandler

Chemistry
Given the following list from the activity series of metals (from most active to least active) K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg which reaction would you NOT expect to occur? 1. All of the listed reactions will occur. 2. Na(s) +Mn2+(aq) -> Na+(aq) +Mn(s) 3. Al3+(aq) + ...
Saturday, October 16, 2010 at 12:49pm by Elva

Chemistry
A solution contains 0.0200 M Pb2 (aq) and 0.0200 M Sr2 (aq). If we add SO42–(aq), what will be the concentration of Pb2 (aq) when SrSO4(s) begins to precipitate?
Friday, April 6, 2012 at 3:52pm by Jematormal91

Chemistry
i need to find the; [Cl-] in PbCl2 solution,[Pb2+] in PbCl2 solution, and the ksp given: PbCl2(s)--> Pb2+(aq)+2Cl-(aq) Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g #moles : AgCl(s)=1.77e-3 Cl(aq)=1.77e-3 Pb2+(aq)= 8.85e-4
Monday, April 26, 2010 at 11:25pm by Anthony

chemistry
i need to find the; sorry i need to find [Cl-] in PbCl2 solution,[Pb2+] in PbCl2 solution, and the ksp given: PbCl2(s)--> Pb2+(aq)+2Cl-(aq) Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g #moles : AgCl(s)=1.77e-3 Cl(aq)=1.77e-3 Pb2+(...
Monday, April 26, 2010 at 11:02pm by Anthony

Gr.11 Chemistry
Is this right? Balanced: 3 Mg(s) + 2 Al(NO3)3(aq) = 2 Al(s) + 3 Mg(NO3)2(aq) Total Ionic Equation: 3 Mg(s) + 2 Al +3 (aq) + 6NO3 -1 (aq) = 2 Al(s) + 3 Mg+2 (aq) + 6NO3 -1 (aq) Net Equation : 3 Mg(s) + 2 Al +3 (aq) = 2 Al(s) + 3 Mg+2 (aq)
Thursday, March 17, 2011 at 7:55pm by Kwan

Chem
Calculate the reaction quotient Q,for the cell reaction.The measured cell voltage is given.balane the chemical equation by using the smallest whole number coefficients. (a) Pt(s)Sn4+(aq),Sn2+(aq)||pb2+(aq),pb2+|C(graphite)(s) -E=+1.33V
Sunday, February 10, 2013 at 10:28am by Prisca

College Chemistry
If the voltage of the cell is -0.1288V at 25Celsius when [Pb2+]=0.1403M and the pressure of H2=1atm, what is the pH Pb(s)+2H+(aq)<-> Pb2+(aq) +H2(g) E0 = 0.1260V
Tuesday, May 3, 2011 at 11:01pm by Jude

chemistry
Could I get some help with these please? Thanks Calculate the electrical potential (V). Ag/1M Ag+1// 1M Fe+3/Fe Ag2+( aq ) + e – Ag+( aq ) 1.98 Fe3+( aq ) + 3e – Fe(s) –0.04 2. A voltaic cell is reconstructed used electrodes based on the following half reactions...
Wednesday, April 23, 2008 at 10:22am by valenti

Chemistry
The antacid Amphogel contains aluminum hydroxide Al(OH}3 How many milliliters of 2.00(M}HCl are required to react with 80.0 mL of 1.48 (M} Al(OH)3(s)? Al(OH)3(s)+ 3HCl(aq)to AlCl3(aq) + 3H2O(aq)
Saturday, April 9, 2011 at 12:03am by Help!!

chemistry
AlCl3(aq)+ NH4OH(aq)-> Al(OH)3(s) + NH4Cl(aq) AlCl3(aq)+ 3NH4OH(aq)-> Al(OH)3(s) + 3 NH4Cl(aq)... is balanced NOw total ioic?? Is this?? : Al +3Cl+3NH4 +OH --> Al+ 3OH+ 3NH4+ 3Cl Crossing out on both sides I end up with OH --> 3OH I do not know what...
Tuesday, November 29, 2011 at 9:32am by Ashley

Chemistry
AlCl3(aq)+ NH4OH(aq)-> Al(OH)3(s) + NH4Cl(aq) AlCl3(aq)+ 3NH4OH(aq)-> Al(OH)3(s) + 3 NH4Cl(aq)... is balanced-- Now total ioic?? Is this right?? : Al +3Cl+3NH4 +OH --> Al+ 3OH+ 3NH4+ 3Cl Crossing out on both sides I end up with OH --> 3OH I do not ...
Wednesday, November 30, 2011 at 8:20am by Ashley

Chem
At 298 K, Pb(IO3)2(s) ↔ Pb2+(aq) + 2IO3-(aq) Ksp = 2.6x 10-13 Pb2+(aq) + 2e- → Pb(s) Eo = (-0.126) V. Find the standard potential of the half-reaction: Pb(IO3)2(s) + 2e- ↔ Pb(s) + 2IO3-(aq) Eo = ? I'm really confused. Please help.
Wednesday, April 17, 2013 at 4:42pm by Anonymous

Chemistry
please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) &#56256;&#56518; Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) &#56256;&#56518; Zn+2(aq) + Pb(s) +2 +4 +2 +4 Zn(s)->Zn2+(aq)+2e...
Thursday, June 16, 2011 at 9:49pm by Dexter

chemistry
Al is above Fe in the activity series which means Al is a better reducing agent than Fe. Thus Al goes into solution and Fe^2+ comes out of solution. 2Al(s) + 3Fe^2+(aq) ==> 3Fe(s) + 2Al^3+(aq) You should know why I multiplied by coefficients. Al(s) + Fe^2+(aq) ==&gt...
Tuesday, May 31, 2011 at 12:24pm by DrBob222

chemistry
A sample of water is found to contain 0.059 ppm of Pb2+ ions. Calculate the mass of lead ions per liter of this solution (assume the density of the water solution is 1.0 g/mL) 1.2E-2 g/L Pb2+ 5.9E-8 g/L Pb2+ 5.9E-5 g/L Pb2+ 1.2E-5 g/L Pb2+ 2.9E-10 g/L Pb2+
Sunday, February 5, 2012 at 11:28am by Heaton

Chemistry
A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1 M) | Pb(s) Answer in ...
Sunday, April 21, 2013 at 12:17pm by David

AP Chem
I'm having trouble balancing these two oxidation-reduction reactions that occur in a basic solution. Can anyone help? Please? The numbers after the formulas are subscripts and any with a minus sign means they are negatively charged (-1). Thanks!! Al(s)+ MnO4-(aq)---&gt...
Monday, October 10, 2011 at 9:22pm by rose

AP chemistry
A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1 M) | Pb(s) Answer in ...
Sunday, April 21, 2013 at 1:00pm by David

chemistry
Pt(s) | Mn2+(aq), MnO4-(aq), H+(aq) || H+(aq), IO3-(aq) | I2(s) | Pt(s) Pt(s) | Mn2+(aq) | MnO2(s) | H+(aq) || H+(aq) || PbO2(s) | Pb2+(aq) | Pt(s) how come the first one has comas within cell notation but not the second one,
Thursday, June 3, 2010 at 10:32pm by eng

Chemistry
MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l) in the form a*MnO4−(aq) + b*SO32−(aq) + c*H+(aq) → d*Mn2+(aq) + e*SO42−(aq) + f*H2O(l) Start by counting how many of each are on each ...
Friday, December 14, 2012 at 9:40am by Jennifer

chemistry
what is the oxidation half reaction, reduction half reaction, and the complete balanced reaction of the following? (a) Al(s) + MnO4‾(aq) → MnO2(s) + Al(OH)4‾(aq) (b) Cl2(g) → Cl ‾(aq) + ClO ‾(aq) (c) NO2‾(aq...
Thursday, October 28, 2010 at 1:13am by Anonymous

Chemistry
Determination of the solubility product of PbI2. From the experimental data we obtain [I-] directly. To obtain Ksp for PbI2, we must calculate [Pb2+] in each equilibrium system. This is most easily done by constructing an equilibrium table. We first find the initial amount of ...
Thursday, April 7, 2011 at 2:07pm by Laura

Chemistry
Please help verify my answer. Not confident it is right: please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) &#56256;&#56518; Zn+2(aq) + Pb(s) a. Write the oxidation and reduction half-cell reactions. Zn(s) + Pb+2(aq) &#56256;&#...
Friday, June 17, 2011 at 10:39am by Dexter

chemistry
[Cl-] in PbCl2 solution, M? [Pb2+] in PbCl2 solution, M? ksp? #moles : AgCl(s)= Cl(aq) Pb2+(aq)= Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g
Monday, April 26, 2010 at 11:02pm by Anthony

chemistry
Reaction 1 I 2(aq) Cu2 + (aq) Ag + (aq) Br2 (aq) Reaction 2 Ag + (aq) Pb2 + (aq) Cu2 + (aq) Zn2 +(aq) Reaction 3 Br - (aq) Cl - (aq) I - (aq)
Monday, April 14, 2008 at 10:01pm by Joseph

Chemistry
Which one of the following combinations of reagents will result in a spontaneous reaction? A) Al(s) + CuCl2(aq) B) Al(s) + CaCl2(aq) C) Zn(s) + CaCl2(aq) D) Cu(s) + ZnCl2(aq) I know the answer is A, but what I don't know is why, or how to figure this out. Thanks!
Tuesday, April 6, 2010 at 4:30pm by Trixie

chem
How many milliliters of 4.80 M HCl are required to react with 110 mL of 1.48 M Al(OH)3? Al(OH)3(s) + 3HCl(aq)to AlCl3(aq) + 3H2O(aq)
Thursday, November 8, 2012 at 5:47pm by daisy

Chemistry
only one of each of the following pairs of reactants undergoes a reaction. Complete and balance the equation for the reaction that occurs. NaCl (aq) + BaCl2 (aq) --> Na2SO4 (aq) + BaCl2 (aq) --> NO3^- (aq) + OH^- (aq)+ Al (s) --> CO3^2- (aq) + OH^- (aq) +...
Monday, April 15, 2013 at 12:06am by Melanie

chemistry
Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)
Tuesday, March 1, 2011 at 6:23pm by Jazmin

chemistry
how many milliliters of 6.00 M HCl are required to react with 60.0 ml of 1.96 M Al(OH)3? Al(OH)3(s)+3HCl(aq)-->AlCl3(aq)+3H2)(aq)
Friday, October 8, 2010 at 10:22pm by Samantha

chem
Determination of the solubility product of PbI2. From the experimental data we obtain [I-] directly. To obtain Ksp for PbI2, we must calculate [Pb2+] in each equilibrium system. This is most easily done by constructing an equilibrium table. We first find the initial amount of ...
Thursday, April 7, 2011 at 3:10pm by Tiffany

Chemistry
Is this correct? Thanks. What is the standard cell potential? Pb2+ ( aq ) + 2e „³ Pb (s) -0.13V Mn2+ ( aq ) + 2e „³ Mn (s) -1.19V Pb2+ ( aq ) + 2e „³ Pb (s) -0.13V Mn (s) „³ Mn2+ ( aq ) + 2e ¡V +1.19V The electrode potential for a ...
Thursday, March 22, 2007 at 12:41pm by key

Chemistry
Ni (s) + Cd^2+(aq)-->Ni^2+(aq)+ Cd(s) MnO4^-1(aq)+ Al (s) ---> Mn^2+(aq)+Al^3+(aq) no matter what i do, i can't seem to balance either of these redox reactions. i'm always off. is there a trick to doing these? i need help please.
Sunday, April 25, 2010 at 10:05pm by Carl

Chemistry/Redox Reactions
1. Find the the standard cell potential of the initial Al-Ni electrochemical cell (before the addition of NaOH). Consult your General Chemistry textbook on how to do this. 2. The solubility equilibrium is: Al(OH)3(s) <=>Al^3+(aq) + 3OH-(aq) Ksp = [Al+3][OH]^3 [OH...
Monday, August 18, 2008 at 3:41am by GK

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. (...
Monday, November 14, 2011 at 2:28am by Jess

chemistry
If 0.7825 g of solid Al and 450. mL of 0.2069 M aqueous Cl- are reacted stoichiometrically according to the equation, what mass (g) of solid Al remained? 3 CuCl2(aq) + 2 Al(s) ¨ 3 Cu + 2 AlCl3(aq)
Saturday, August 25, 2012 at 9:02am by Ananth

Chem
It makes it more complicated but we really should include the charges. Your main problem is that Al(OH)3 is a solid and does NOT break out ions. If you included the phases it might have kept you from making that error. Al^3+(aq) + PO4^3-(aq) + 3Na+(aq) + 3OH^-(aq) ==>Al...
Sunday, July 15, 2012 at 12:53pm by DrBob222

Chemistry
Are these balanced and are my products correct? 3HNO3(aq)+Al(OH)3(s) = Al(NO3)3+3H2O(l) Na2CO3(s)+H2SO4(aq) = H2O(l)+CO2(g)+Na2SO4(aq) I just wanted someone to look this over and see if I did it right
Wednesday, May 18, 2011 at 2:37pm by Monster

chemistry(please check my work)
If 0.836 g of solid Al reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 1160 mL, what mass (g) of gaseous H2 is produced? 6 HClO4(aq) + 2 Al(s) → 3 H2(g) + 2 Al(ClO4)3(aq) 0.836g/molecular weight Al=mole of Al...
Saturday, April 3, 2010 at 1:04am by eng

Chemistry
calculate cell potential at 25C for: 3Fe3+(aq) + AL(s)= 3Fe2+(aq)+ Al3+ (aq) if Fe3+ = 0.300 M, Fe2+ = 0.150M Al3+ = 0.300M. The standard reduction potentials are as follows: Fe3+ (aq) + e- = Fe2+ (aq) Al3+ (aq) + 3e-=Al (s) Eo = +0.771 V Eo = -1.66 V
Monday, October 18, 2010 at 11:33pm by Helen

Chem
Identify the Oxidizing agent and the reducing agent for Al(s)+3Ag^+(aq)--->Al^3+(aq)+3Ag(s) Express your answers as chemical formulas serperated by a comma. I tried putting in Al,3Ag^+ and 3Ag,Al^3+ I keep getting it wrong and only have one attempt left I need help please.
Thursday, October 7, 2010 at 2:55pm by Kaylee

Chem
what is the total ionic equation for AlPO4(aq)+3NaOH(aq)=Al(OH)3(s)+ Na3PO4, I am not sure I am right I have Al+PO4(aq)+Na3+OH3() --> Al+OH3+Na3+PO4 but then everything crosses itself out and I don't have a net. what am I doing wrong?
Sunday, July 15, 2012 at 12:53pm by sweetpea

chemistry
oops, the second one should be Pt(s) | Mn2+(aq) | MnO2(s) | H+(aq) || H+(aq) | PbO2(s) | Pb2+(aq) | Pt(s) but can you clarify the comma one
Thursday, June 3, 2010 at 10:32pm by eng

chemistry
No reaction. However, if the ammonia is dissolve in water, and the aluminum nitrate is dissolved, this reaction is likely. Al(NO3)3 (aq) + 3NH4OH (aq) (aqueous NH3) -----> Al(OH)3 (s) + 3NH4NO3 (aq)
Friday, February 24, 2012 at 3:08pm by bobpursley

Chemistry
Balancing Equations for Reactions Occurring in Basic Solutions: I have the answer for it and I've gone and redone it twice and I can't match the answer...I was just seeing if anyone could show the steps so that I could see where I messed up... NO2-(aq)+Al(s)-->...
Monday, October 27, 2008 at 8:20pm by Bri

chemistry
Given: Cr3+(aq) + 3e¨C  Cr(s); E¡ã = ¨C0.74 V Pb2+(aq) + 2e¨C  Pb(s); E¡ã = ¨C0.13 V What is the standard cell potential for the following reaction? 2Cr(s) + 3Pb2+(aq) ¡ú 3Pb(s) + 2Cr3+(aq)
Monday, May 3, 2010 at 11:46am by Anonymous

Chemistry
How do i balance the oxidation-recution reaction Al(s)+MnO4(aq)-->MnO2(s)+Al(OH)4(aq) if it is in a basic solution?
Thursday, September 6, 2007 at 6:31pm by Anonymous

chemistry
For the reactions that occurred spontaneously in the individual tables, balance these reactions assuming they are in an acidic solution. Reaction 1: Cu I^- Ag Br^- Reaction 2: Zn Pb Cu Ag Reaction 3: Cl2 Br2 I2 Reaction 1 I 2(aq) Cu2 + (aq) Ag + (aq) Br2 (aq) Reaction 2 Ag + (...
Tuesday, April 15, 2008 at 10:45pm by Joseph

AP CHEMISTRY
A voltaic cell is constructed that is based on the following reaction. Sn2+(aq) + Pb(s) -> Sn(s) + Pb2+(aq) (a) If the concentration of Sn2+ in the cathode half-cell is 1.80 M and the cell generates an emf of +0.219 V, what is the concentration of Pb2+ in the anode half...
Friday, April 6, 2012 at 2:57pm by DAN

Chemistry
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l) i got 2525 and its going in as incorrect Now you get ...
Friday, December 14, 2012 at 9:40am by Trina

Chemistry
Why is heating required for this formation: 6NaOH (aq) + Al2(SO4)3 (aq) ¨ 2Al(OH)3 (s) + 3Na2SO4 (aq)? Wouldn't freezing favour the formation of Al(OH)3 since freezing lower the KSP and more Al(OH)3 would precipitate?
Monday, March 22, 2010 at 5:56pm by Alan

AP chem
A 1.25-g sample contains some of the very reactive compound Al(C6H5)3. On treating the compound with aqueous HCl, 0.951 g of C6H6 is obtained. Al(C6H5)3(s) + 3HCl(aq) --> AlCl3(aq) + 3C6H6(l) Assuming that Al(C6H5)3 was converted completely to products, what is the ...
Tuesday, September 6, 2011 at 1:43pm by Jen

CHEMISTRY HELP ASAP
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l) i got 2525 and its going in as incorrect Now you get ...
Friday, December 14, 2012 at 10:16am by Trina

chemistry
Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I don't know what to do
Thursday, October 21, 2010 at 9:44pm by Someone PLEASE HELP!

chemistry
Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I don't know what to do
Thursday, October 21, 2010 at 8:59pm by Someone PLEASE HELP!

Chemistry
CONSIDER THE FOLLLOWING UNBALANCED REDOX EQUATION: IO3^-(AQ) + Al(S)-->I2(S) + A;^3+(AQ) A. WHAT IS THE OXDATION NUMBER OF IODINE IN THE IODATE ION? I GOT IO3^6(AQ)? B. WHICH SPECIES IS THE REDUCING AGENT I GOT AL^3+(AQ) C. USING THE OXIDATION AND REDUCTION HALF ...
Wednesday, November 30, 2011 at 6:58pm by PAM

CHEMISTRY HELP ASAP
Start from scratch and separate into half-reactions MnO4-(aq) -----> Mn(^2+)(aq) SO3(^2-)(aq) ----> SO4(^2-)(aq) Balance O by adding H2O as needed: MnO4-(aq) -----> Mn(^2+)(aq) + 4H2O(l) SO3(^2-)(aq) + H2O(l) ----> SO4(^2-)(aq) balance H by adding H...
Friday, December 14, 2012 at 10:16am by yamilex

Chemistry
what occurs during the operation of a voltaic cell based on the following reaction?..... Ni (s) + Pb2+ (aq) --> Ni2+ (aq) + Pb (s)
Sunday, February 10, 2008 at 5:08pm by Jenifer

ap chemistry
Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I got .548733V Is this right?
Thursday, October 21, 2010 at 3:53pm by brian

chem
What is being oxidized in each of the following reactions? (a) Sr(s) + F2(g) SrF2(s) F2 SrF2 Sr .(b) H2(g) + I2(g) 2 HI(g) H2 HI I2 .(c) 2 Li(s) + Pb2+(aq) 2 Li+(aq) + Pb(s) Pb2+ Li+ Pb Li thanks:) can you give an explanation. I know a is Sr but I don't get why. If it ...
Tuesday, May 3, 2011 at 7:34pm by Lilly

chemistry
No. this is the sample I did. Cu+(s)+/Cu2+aq)//Al3(aq)+/Al(s) is this right? Anode = Cu+(s)+/Cu2+(aq) - +0.337 Cathode = Al3+(aq)+/Al(s) - -1.66 Overall redox reactions: -0.337 - -1.66 = 1.323?
Wednesday, May 8, 2013 at 3:45pm by Chloe

chemistry
write equations for the reactions of NaOH(aq) with solutions containing Al^3+ Cu^2+(aq),Pb^2+(aq) and Fe^3+(aq) ions respectively
Sunday, September 5, 2010 at 7:35pm by kabelo

Chemistry
Write the Gross and Net Ionic Equations for the following Reactions: LiNO3(aq)+(NH4)3N(aq) => Li3N(s)+ NH4NO3(aq) Al(s)+CuCl2(aq) => AlCl3(aq)+Cu(s)
Thursday, March 8, 2012 at 9:17pm by James

Chemistry 105
Which of the following reactions are redox reactions? 1. Al(s)+3Ag^+(aq)-->Al^3+(aq)+3Ag(s) 2. SO3(g)+H2O(l)-->H2SO4(aq) 3. Ba(s)+Cl2(g)-->BaCl2(s) 4. Mg(s)+Br2(l)-->MgBr2(s)
Monday, October 10, 2011 at 10:46pm by julie

Ap Chemistry
Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I kept getting .55V but it is wrong. Can someone please help me?
Thursday, October 21, 2010 at 7:20pm by brian

chemistry
If 0.0490 mol of solid Al reacts stoichiometrically according to the balanced equation with 990 mL of aqueous Cl-, what molarity (M) of Cl- is required? 3 CuCl2(aq) + 2 Al(s) → 3 Cu + 2AlCl3(aq)
Friday, April 2, 2010 at 10:46pm by eng

Chemistry
Using the half reaction potentials calculate the E^o cell for the Ni-Al cell. Ni (aq) + 2e- <-> Ni (s) -0.25v Al3+ (aq) + 3e- <-> Al (s) -1.66v Using that answer determine Ecell for Ni-Al cell when the concentration of Al3+ is 4.00M and the ...
Wednesday, April 25, 2012 at 10:44am by Maura

chemistry
Lead metal is added to 0.100M Cr3+(aq) Pb(s) + 2Cr3+(aq) -> Pb2+(aq) + Cr2+(aq) What is [Pb3+] when equilibrium is reached? What is [Cr2+] when equilibrium is reached? What is [Cr3+] when equilibrium is reached? i solved it buh for sum reason am not getting d correct ...
Monday, February 9, 2009 at 9:11pm by help!!!

chemistry
the activity series of metals is: Au < Ag < Cu < Sn < Cd < Zn < Al < Mg < Na < Cs which reaction below occutrs spontaneously upong mixing the reageant shown? a) Sn(s) + Al3+ (aq)-> sn2+(aq) + al(s) b) sn(s...
Sunday, October 23, 2011 at 7:54pm by Dani

chemistry
Lead metal is added to 0.100M Cr3+(aq) Pb(s) + 2Cr3+(aq) -> Pb2+(aq) + Cr2+(aq) What is [Pb3+] when equilibrium is reached? What is [Cr2+] when equilibrium is reached? What is [Cr3+] when equilibrium is reached? any help is appreciated
Monday, February 9, 2009 at 7:05pm by skyblue12

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)
Sunday, May 12, 2013 at 3:52pm by Lana

Chem
Calculate the standard cell voltage, Eo, for the following reactions. Include the sign of the voltage in your answers. (a) Fe2+(aq) + Pb(s) --> Pb2+(aq) + Fe(s)
Tuesday, May 10, 2011 at 6:26pm by Rachel

chemistry
Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will see how more extensive tables of relative strengths of oxidizing and reducing agents have been developed. Procedure: ...
Saturday, April 12, 2008 at 1:37pm by Joseph

Chemistry
Given that PbCl2 = Pb2+ + 2Cl- then the Ksp = [Pb2+][Cl-]^2 the solubility of the lead(II)chloride in moles per litre is numerically equal to the concentration of [Pb2+] in moles per litre, because 1 mole of PbCl2 gives 1 mole fo Pb2+ so x moles of PbCl2 gives x moles of Pb2+ ...
Thursday, December 10, 2009 at 12:06am by Dr Russ

Chemistry
How many grams of PbCO3 will dissolve in 1.00L of 1.00M H+ is added to 5.00g of PbCO3?? PbCO3(s) + 2H+ (aq) -> Pb2+ (aq) + H2O (l) + CO2 (g)
Monday, July 18, 2011 at 9:09pm by San

chemistry
3.50 mol Al(NO3)3 reacts with 5.00 mols K2CrO4, the total number of moles of Al2(CrO4)3 and KNO3 would be? Here is the equation if it's needed. 2 Al(NO3)3(aq) + 3 K2CrO4(aq) → Al2(CrO4)3(s) + 6 KNO3(aq)
Wednesday, December 12, 2012 at 1:51am by Michelle

AP CHEM
Complete and balance the reaction Al(s) + Pb2+(aq) ! using the smallest possible integers. I got: 2Al(s) + 3Pb2 ==> Al2Pb3 Calculate the standard free energy. Faraday’s constant is 96485 J V · mol Answer in units of kJ/mol. I know the formula is -nFE but ...
Thursday, October 21, 2010 at 6:30pm by brian

chemistry
*Please note For table 1 I2(aq), Cu2+(aq), Ag+(aq) and Br2(aq) are supposed to be shifted to the right since they are horizontal. I-(aq), Cu(s), Ag(s) and Br-(aq) are vertical. For table 2 Ag+(aq), Pb2+(aq), Cu2+(aq) and Zn2+(aq) are supposed to be shifted to the right since ...
Friday, April 11, 2008 at 7:22pm by Joseph

chemistry
What about this question? Calculate the mass (g) of PbSO4 that will dissolve in 2000 mL of 0.0694 M K2SO4 solution. The equation represents the solubility process. PbSO4 (s) Pb2+ (aq) + SO42- (aq) Ksp = 1.7 x 10-8
Saturday, October 16, 2010 at 3:08pm by Confused

Chemistry
cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equation Please help thanks
Sunday, May 5, 2013 at 7:46pm by Katie

Chemistry
cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equation Please help thanks
Sunday, May 5, 2013 at 6:23pm by Tommy

Chem
cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equation Please help thanks
Sunday, May 5, 2013 at 5:04pm by Jess

Chem
A lake may be polluted with Pb2+ ions. what precipitation reaction might you use to test for the presense of Pb2+?
Sunday, October 9, 2011 at 12:02am by Josh

chemistry
Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble. Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will ...
Sunday, April 13, 2008 at 11:25pm by Joseph

chemistry
We need to think our way through this problem. ............Pb^2+ + CrO42- ==>PbCrO4 initial......0........0.02......... So when (Pb2+)(CrO42-) = 1.8E-14, PbCrO4 will start to ppt. Therefore, (Pb2+) = 1.8E-14/(0.02) = 9.0E-14 when PbCrO4 FIRST begins to ppt. When all of ...
Thursday, April 14, 2011 at 5:55am by DrBob222

AP Chemistry
The Al(OH)3 comes from this reaction. The NH3 + H2O ==> NH4^+ + OH^- provides the OH^- for the reaction. Al^+3(aq) + 3OH^-(aq) ==> Al(OH)3(s) The Zn ion forms the zinc ammonia complex ion which is soluble so ALL of the 2.70 g is Al(OH)3. Convert 2.70 g Al(OH)3 to...
Sunday, April 3, 2011 at 2:28pm by DrBob222

chemistry
The solubility product constant (Ksp) for the dissolution of PbSO4 as represented by the chemical equation is 1.7x10-8. PbSO4 (s)= Pb2+ (aq) + SO42- (aq) Calculate the mass (g) of PbSO4 that dissolves in 1100 mL of water.
Thursday, May 13, 2010 at 2:08am by andy

Chemistry
If 430 mL of 0.837 M aqueous HNO3 and 23.5 g of solid Al are reacted stoichiometrically according to the balanced equation, how many grams of solid Al remain? Round your answer to 3 significant figures. 6HNO3(aq) + 2Al(s) → 3H2(g) + 2Al(NO3)3(aq)
Friday, February 26, 2010 at 12:11am by Sammy

College Chemistry
What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, ...
Saturday, June 23, 2012 at 2:45pm by Maria

chemistry
Part A Identify the anode and cathode, and indicate the direction of Na+ ion and NO3 - ion flow from the salt bridge. 1) Al is the anode and Co is the cathode; Na+ ions flow into half-cell compartment (A) and NO3 - ions flow into half-cell compartment (B). 2) Co is the anode ...
Wednesday, April 24, 2013 at 2:41pm by university

chemistry
Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V Can someone please help me? I have the equation: 2Cr +3Pb(+2) --> 2Cr(+3) + 3Pb
Thursday, October 21, 2010 at 8:01pm by Fred

Inorganic chemistry
Consider the half-reactions: Cu^2+(aq) +2e^- ==> Cu(s) E naught = +0.34V Sn^2+(aq) + 2e^- ==> Sn E naught = -0.14V Fe^2+ + 2e^- ==> Fe(s) E naught = -0.44V Al^3+(aq) = 3e^- ==> Al(s) E naught = -1.66V Mg^2+(aq) = 2e^- ==> Mg(s) E naught = -2....
Saturday, April 11, 2009 at 10:54pm by Steve

Chemistry
A student observed the following reaction: AlCl3(aq)+3NaOH(aq) -> Al(OH)3(s)+3NaCl(aq) After the products were filtered, which substances remained on the filter paper and why?
Saturday, March 7, 2009 at 4:35pm by P

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