Homework Answers
The oxidation number of Si in SiO2
x + (-2*2) = 0
x -4 =0
x = +4
The oxidation number of Si is + 4
The oxidation number of S in HS^-
+1+x = -1
x = -2
The oxidation number of S is -2
The oxidation number of S in S^-2
The oxidation number of S is -2
The oxidation number of S in H2S
(+1*2)+x = 0
x = -2
The oxidation number of S is -2
The oxidation number of S in SO4^2-
x +(-2*4) = -2
x = +6
The oxidation number of S is +6
The oxidation number of S in AsO4^3-
x +(-2*4) = -3
x = +5
The oxidation number of As is +5
The oxidation number of Se in SeO4^2-
x +(-2*4) = -2
x = +6
The oxidation number of Se is +6
The oxidation number of Fe in FeOOH
x +(-2*2)+1 = 0
x = +3
The oxidation number of Fe is +3
The oxidation number of Mn in MnO2
x +(-2*2) = 0
x = +4
The oxidation number of Mn is +4
The oxidation number of Mn in MnOOH
x +(-2*2) +1= 0
x = +3
The oxidation number of Mn is +3
The oxidation number of C in CH2O
x +(+1*2) -2= 0
x = 0
The oxidation number of C is 0
The oxidation number of C in CO2
x +(-2*2) = 0
x = +4
The oxidation number of C is +4
The oxidation number of C in CH4
x +(+1*4) = 0
x = -4
The oxidation number of C is -4
The oxidation number of U in UO2^2+
x +(-2*2) = +2
x = +6
The oxidation number of U is +6
The oxidation number of U in UO2
x +(-2*2) = 0
x = +4
The oxidation number of U is +4
The oxidation number of Ca in ca^2+ is + 2
The oxidation number of Al in Al(OH)3
x +(-2*3)+(1*3) = 0
x = +3
The oxidation number of Al is +3
The oxidation number of Al in Al^3+ is + 3
The oxidation number of H in H^+ is +1
The oxidation number of H in H2O
2x+(-2*1) = 0
x = +1
The oxidation number of H is +1
Add Answer to:
1) What are the oxidation numbers of (1 pt each): Si in SiO2 S in HS...
7. A low concentration of NTA has equilibrated with PbCO3(s) at pH 7.00 in a medium...
7. A low concentration of NTA has equilibrated with
PbCO3(s) at pH 7.00 in a medium having a final
HCO3- concentration of 7.50x10-4
M.
a. Determine [Pb2+].
b. Write out KT and the overall reaction for
KT.
c. What is the ratio of [Pb(NTA)- ] to
[H(NTA)2-] in this solution?
Potentially useful data: Reaction Hg 2 +2e = Hgº(s) Feste = Fe2 Cu 2 +2e = Cuº(s) 2H + 2e = H2(g) Pb2 +2e=Pbº(s) Ca*2 + 2e = Cdº(s) 1/4...
Не 1 H C N O F Ne В 2 Li Вe Si P S Ar...
Не 1 H C N O F Ne В 2 Li Вe Si P S Ar Al Na Mg 3 Se Br Kr Cu Zn Ga Ge As Cr Mn Fe Co Ni 4 K Ca Sc Ti V Sn Sb Te I Ru Rh Pd Ag Cd In Zr Nb Mo Tc Rb Sr Y $5 Po At Pb Bi Hf Ta W Rn Re Os Ir Hg T Pt Au 6 Cs Ba La Ra Ac Fr Tm...
8. Using the Nernst equation, determine the ratio of Hg2+ to Cu2+ at equilibrium in an electrochemical cell in otherwise...
8. Using the Nernst equation, determine the ratio of
Hg2+ to Cu2+ at equilibrium in an
electrochemical cell in otherwise pure water, when in contact with
Hg(s) and Cu (s)
Potentially useful data: Reaction Hg 2 +2e = Hgº(s) Feste = Fe2 Cu 2 +2e = Cuº(s) 2H + 2e = H2(g) Pb2 +2e=Pbº(s) Ca*2 + 2e = Cdº(s) 1/4 O2(g) + H + = 1/2 H2O 2 02(g) + 2H+ + 2e = H,O2 1/2 NO3 + H +...
When answering Parts a-h, consider only the molecules and ions, Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq), and Cr2O7^2-(aq), under standard state conditions. (1 pt each) Use standard reduction...
When answering Parts a-h, consider only the molecules and ions,
Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq),
and Cr2O7^2-(aq), under standard state conditions. (1 pt each)
Use standard reduction table.
a) Which of these molecules and ions are oxidizing agents?
b) Which of these molecules and ions are reducing agents?
c) List the oxidizing agents from part a in DECREASING order of
oxidizing agent strength. (strongest OA to weakest OA)
d) List the reducing agents from part b in DECREASING order of...
Oxidation Numbers 1. Assign oxidation numbers to the atoms in each of the following. a) SO2...
Oxidation Numbers 1. Assign oxidation numbers to the atoms in each of the following. a) SO2 d) Mgl b) HCIO e) CaH c) Cr,0,2 f) Fe, 2. For each of the following: •assign oxidation numbers •indicate whether the equation represents a redox reaction .if redox, identify OA and RA a) Cu + 2 AgNO, 2 Ag + Cu(NO3)2 b) Pb(NO3)2 + 2 KI Pbl, + 2 KNO, c) Cl2 + 2 KI I2 + 2 KCI d) 2 NaCl 2...
For each of the reactions below, a) identify the oxidation numbers for each element, b) identify...
For each of the reactions below, a) identify the oxidation numbers for each element, b) identify which element(s) are oxidized (if any), c) identify which element(s) are reduced (if any) and d) identify the reaction as either redox or as non-redox AgNO3 + NaOH → AgOH + NaNO3 Ag: +1→+1, N:+5→+5, O:-2→2, Na:+1→+1, H:+1→+1 None None Non-redox 2AgNO3 + Na2CO3 → Ag2CO3 + 2NaNO3 Ag: +1→+1, N:+5→+5, C:+4→+4 O:-2→2, Na:+1→+1 None None Non-redox 2LiHCO3 → Li2CO3 + H2O + CO2...
6. Given a total dissolved lead concentration of 2.0x10-5 M, a total dissolved NTA concentration of...
6. Given a total dissolved lead concentration of
2.0x10-5 M, a total dissolved NTA concentration of
2.0x10-2 M, and a pH of 12.3 (note extreme pH)
a. Under these conditions, what is the dominant form of NTA?
b. Write an equation for total dissolved NTA and for total
dissolved Pb. What assumptions can you make?
c. Calculate the predicted [Pb2+], considering NTA
complexation only?
d. What is the [Pb2+] as predicted by the solubility
of Pb(OH)2(s) at pH 12.3?
e....
+ + + + + + + + + Metal Oxidation Reaction Lithium Li(s) - Li+...
+ + + + + + + + + Metal Oxidation Reaction Lithium Li(s) - Li+ (aq) Potassium K(s) K+ (aq) Barium Ba(s) Ba2+ (aq) Calcium Ca(s) Ca2+ (aq) Sodium Na(s) Na+ (aq) Magnesium Mg(s) Mg2+ (aq) Aluminum Al(s) A13+(aq) Manganese Mn(s) Mn2+ (aq) Zn(s) Zn2+ (aq) Chromium Cr(s) Cr3+ (aq) Iron Fe(s) Fe2+ (aq) Cobalt Co(s) Co2+ (aq) Nickel Ni(s) Ni2+ (aq) Tin Sn(s) Sn2+ (aq) Lead Pb(s) Hydrogen H2(8) Copper Cu(s) Cu2+ (aq) Silver Ag(s) Ag+ (aq) Mercury...
Determine the oxidation number of each clement in the R S following ions or compounds. 0...
Determine the oxidation number of each clement in the R S following ions or compounds. 0 -2 (a) BO, (d) Cal (b) CO2- (e) H SIO GC-+ 30-2 c) - HSO- (pl GFS-1 d Cast2 Haul e_Hat Sixt6 03-22 $_H=+1 $216-02-2 7. Which two of the following reactions are oxidation reduction reactions? Explain your answer in each case Classify the remaining reaction. uds) (a) Zn(s) + 2 NO, (aq) + 4H,O'faq) → Zn2+ (aq) + 2 NO 8) + 6H2O(C)...
1A 8A H 2A 3A 4A 5A 6A 7A He Li Be 1B 2B All Si p S CI Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Z...
1A 8A H 2A 3A 4A 5A 6A 7A He Li Be 1B 2B All Si p S CI Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Хе Pb Bi Po At Rn Fr Ra Ac Rf Ha Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu The...
7. A low concentration of NTA has equilibrated with
PbCO3(s) at pH 7.00 in a medium having a final
HCO3- concentration of 7.50x10-4
M.
a. Determine [Pb2+].
b. Write out KT and the overall reaction for
KT.
c. What is the ratio of [Pb(NTA)- ] to
[H(NTA)2-] in this solution?
Potentially useful data: Reaction Hg 2 +2e = Hgº(s) Feste = Fe2 Cu 2 +2e = Cuº(s) 2H + 2e = H2(g) Pb2 +2e=Pbº(s) Ca*2 + 2e = Cdº(s) 1/4...
Не 1 H C N O F Ne В 2 Li Вe Si P S Ar Al Na Mg 3 Se Br Kr Cu Zn Ga Ge As Cr Mn Fe Co Ni 4 K Ca Sc Ti V Sn Sb Te I Ru Rh Pd Ag Cd In Zr Nb Mo Tc Rb Sr Y $5 Po At Pb Bi Hf Ta W Rn Re Os Ir Hg T Pt Au 6 Cs Ba La Ra Ac Fr Tm...
8. Using the Nernst equation, determine the ratio of
Hg2+ to Cu2+ at equilibrium in an
electrochemical cell in otherwise pure water, when in contact with
Hg(s) and Cu (s)
Potentially useful data: Reaction Hg 2 +2e = Hgº(s) Feste = Fe2 Cu 2 +2e = Cuº(s) 2H + 2e = H2(g) Pb2 +2e=Pbº(s) Ca*2 + 2e = Cdº(s) 1/4 O2(g) + H + = 1/2 H2O 2 02(g) + 2H+ + 2e = H,O2 1/2 NO3 + H +...
When answering Parts a-h, consider only the molecules and ions,
Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq),
and Cr2O7^2-(aq), under standard state conditions. (1 pt each)
Use standard reduction table.
a) Which of these molecules and ions are oxidizing agents?
b) Which of these molecules and ions are reducing agents?
c) List the oxidizing agents from part a in DECREASING order of
oxidizing agent strength. (strongest OA to weakest OA)
d) List the reducing agents from part b in DECREASING order of...
Oxidation Numbers 1. Assign oxidation numbers to the atoms in each of the following. a) SO2 d) Mgl b) HCIO e) CaH c) Cr,0,2 f) Fe, 2. For each of the following: •assign oxidation numbers •indicate whether the equation represents a redox reaction .if redox, identify OA and RA a) Cu + 2 AgNO, 2 Ag + Cu(NO3)2 b) Pb(NO3)2 + 2 KI Pbl, + 2 KNO, c) Cl2 + 2 KI I2 + 2 KCI d) 2 NaCl 2...
6. Given a total dissolved lead concentration of
2.0x10-5 M, a total dissolved NTA concentration of
2.0x10-2 M, and a pH of 12.3 (note extreme pH)
a. Under these conditions, what is the dominant form of NTA?
b. Write an equation for total dissolved NTA and for total
dissolved Pb. What assumptions can you make?
c. Calculate the predicted [Pb2+], considering NTA
complexation only?
d. What is the [Pb2+] as predicted by the solubility
of Pb(OH)2(s) at pH 12.3?
e....
+ + + + + + + + + Metal Oxidation Reaction Lithium Li(s) - Li+ (aq) Potassium K(s) K+ (aq) Barium Ba(s) Ba2+ (aq) Calcium Ca(s) Ca2+ (aq) Sodium Na(s) Na+ (aq) Magnesium Mg(s) Mg2+ (aq) Aluminum Al(s) A13+(aq) Manganese Mn(s) Mn2+ (aq) Zn(s) Zn2+ (aq) Chromium Cr(s) Cr3+ (aq) Iron Fe(s) Fe2+ (aq) Cobalt Co(s) Co2+ (aq) Nickel Ni(s) Ni2+ (aq) Tin Sn(s) Sn2+ (aq) Lead Pb(s) Hydrogen H2(8) Copper Cu(s) Cu2+ (aq) Silver Ag(s) Ag+ (aq) Mercury...
Determine the oxidation number of each clement in the R S following ions or compounds. 0 -2 (a) BO, (d) Cal (b) CO2- (e) H SIO GC-+ 30-2 c) - HSO- (pl GFS-1 d Cast2 Haul e_Hat Sixt6 03-22 $_H=+1 $216-02-2 7. Which two of the following reactions are oxidation reduction reactions? Explain your answer in each case Classify the remaining reaction. uds) (a) Zn(s) + 2 NO, (aq) + 4H,O'faq) → Zn2+ (aq) + 2 NO 8) + 6H2O(C)...
1A 8A H 2A 3A 4A 5A 6A 7A He Li Be 1B 2B All Si p S CI Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Хе Pb Bi Po At Rn Fr Ra Ac Rf Ha Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu The...
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