Homework Answers
ZnCO3 (s) <—> Zn2+(aq) + CO32- (aq) k1 = 1.5*10^-10
HCO3-(aq) <—> CO32- (aq) + H+(aq) k2 = 5.6*10^-11
reverse the 2nd reaction:
ZnCO3 (s) <—> Zn2+(aq) + CO32- (aq) k1 = 1.5*10^-10
CO32- (aq) + H+(aq) <—>HCO3-(aq) k3 = 1/k2
k3= 1/(5.6*10^-11) = 1.79*10^10
now add both reaction:
ZnCO3 (s) + H+(aq) <—> Zn2+(aq) +HCO3-(aq)
this is the required reaction
kc = k1*k3
= (1.5*10^-10)*(1.79*10^10)
= 2.7
Answer: c
Add Answer to:
Given the following information: ZnCO_3(s) Zn^2+ (aq) + CO^2-_3(aq) K_sp = 1.5 times 10^-10 HCO^-_3 (aq)...
Write the equilibrium constant expression for this reaction: H_2CO_3(ag) rightarrow 2H^+ (aq) + CO^2-_3 (aq)
Write the equilibrium constant expression for this reaction: H_2CO_3(ag) rightarrow 2H^+ (aq) + CO^2-_3 (aq)
27. Erik performed the following equilibrium reaction, ZnO(s) + CO(g) = Zn(s) + CO2(g) a. (4...
27. Erik performed the following equilibrium reaction, ZnO(s) + CO(g) = Zn(s) + CO2(g) a. (4 pts) Write the equilibrium-constant expression for this reaction. b. (2 pts) in the forward reaction, is ZnO oxidized, or reduced? 28. Armaria uses significant figures to indicate the uncertainty by means of the number of digits. a. (4 pts) Add the following measured quantities: 11.62 g. 2.1 g, 128.183 g b. (4 pts) Multiply 4.50 x 10 by 1.2 x 10-4
3. Consider the following redox reaction: Zn Zn (s) +Cu2 (aq) (aq)+ Cu (s) 3.a. (10 p) Indicate the line diagram of...
3. Consider the following redox reaction: Zn Zn (s) +Cu2 (aq) (aq)+ Cu (s) 3.a. (10 p) Indicate the line diagram of the galvanic cell that uses the spontaneous redox reaction shown above. 3.b. (5 p) Write the reduction reaction corresponding to each half-cell. 3.c (5p)Calculate the equilibrium constant of the reaction K using the Nemst equation. Refer to Appendix H in the textbook to find the E values.
A solution contains 0.0500 M Co^3+ (aq), 0.0310 M S^2- (aq), and 0.95 M NH_3. Cobalt(III)...
A solution contains 0.0500 M Co^3+ (aq), 0.0310 M S^2- (aq), and 0.95 M NH_3. Cobalt(III) ions in aqueous solutions complex with NH_3 to produce Co(NH_3)_6^3+. (K_f = 5.0 times 10^31) What will be the concentration of Co^3+ (aq) when Co(NH_3)_6^3+ forms? Will CO_2 S_3 precipitate? (K_sp = 4.0 times 10^-21) precipitate forms no precipitate forms
18. Given the following equilibrium constants, K. (HSO4) = 1.2 x 102 K(CHCO2) = 5.6 x...
18. Given the following equilibrium constants, K. (HSO4) = 1.2 x 102 K(CHCO2) = 5.6 x 100 Kw = 1.00 x 10-14 determine the equilibrium constant for the reaction below at 25°C. HSO4 (aq) + CH3CO2 (aq) =30/(aq) + CH3COH(aq) a. 6.7 x 10-12 b. 2.1 x 10-7 c. 1.5 x 10- d. 6.7 x 10 e. 2.1 x 107
Question 7 (1 point) Saved Consider these metal ion/metal standard reduction potentials Cu2(aq)|Cu(s) Ag+1(aq)|Ag(s) Co2(aq)|Co(s) Zn+2(aq)]Zn(s)...
Question 7 (1 point) Saved Consider these metal ion/metal standard reduction potentials Cu2(aq)|Cu(s) Ag+1(aq)|Ag(s) Co2(aq)|Co(s) Zn+2(aq)]Zn(s) +0.34 +0.80 V -0.28 V -0.76 V Based on the data above, which one of the species below is the best oxidizing agent? 0 1 Cols) O2) Zn(s) 3) Cutlaq) 04) Culs) 5) Ag+h(aq)
Quiz 4 10) Predict the products of the following single replacement reaction. Zn(s) + CoCl2(aq) A)...
Quiz 4 10) Predict the products of the following single replacement reaction. Zn(s) + CoCl2(aq) A) No reaction occurs B) ZnCo(aq) + Cl2(g) C) Co(s)+ ZnCl2(aq) D) ZnCoCl2(aq) E) CoCl(aq)+ZnCI(aq) 11) What mass of CoH120s (glucose) is needed to prepare 450.mL of a 0.650 M solution of glucose in water? C) 52.7 g D) 0.293 g E) 125 g A) 0.692 g B) 293 g
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions...
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions in the solution come from the Zn(OH)2: you can ignore the autoionization of water.) (4 pts) b) Zn(OH)2 is less soluble in even very dilute solutions of Zn(NOs)2 due to the common ion effect. Determine the molar solubility of zine hydroxide in a 1.0 x 10-4 M...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq)...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq) + H2 (9) Individual oxidation numbers: a. Assign oxidation numbers to each element as indicated by the boxes in H SO, Zn in ZnSOS in Znso. O in ZnSO, and H in H2) (6 pts) b. Write the total ionic equation for the reaction above. (9 pts) ndicated by the boxes above. (i.e. Zn in Zn(s), H c. Write the net ionic equation for...
24. Determine A Sºrxn given the following information: Reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(9)...
24. Determine A Sºrxn given the following information: Reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(9) Substance Zn(s) HCl(aq) H2(g) Zn2+(aq) Cl(aq) Sº (J/mol x K) 60.9 56.5 130.58 -106.5 55.10 A) -39.6 J/mol.K B) O J/mol.K C) +39.6 J/mol.K D) -38.2 J/mol.K E) +38.2 J/mol.K
Write the equilibrium constant expression for this reaction: H_2CO_3(ag) rightarrow 2H^+ (aq) + CO^2-_3 (aq)
27. Erik performed the following equilibrium reaction, ZnO(s) + CO(g) = Zn(s) + CO2(g) a. (4 pts) Write the equilibrium-constant expression for this reaction. b. (2 pts) in the forward reaction, is ZnO oxidized, or reduced? 28. Armaria uses significant figures to indicate the uncertainty by means of the number of digits. a. (4 pts) Add the following measured quantities: 11.62 g. 2.1 g, 128.183 g b. (4 pts) Multiply 4.50 x 10 by 1.2 x 10-4
3. Consider the following redox reaction: Zn Zn (s) +Cu2 (aq) (aq)+ Cu (s) 3.a. (10 p) Indicate the line diagram of the galvanic cell that uses the spontaneous redox reaction shown above. 3.b. (5 p) Write the reduction reaction corresponding to each half-cell. 3.c (5p)Calculate the equilibrium constant of the reaction K using the Nemst equation. Refer to Appendix H in the textbook to find the E values.
A solution contains 0.0500 M Co^3+ (aq), 0.0310 M S^2- (aq), and 0.95 M NH_3. Cobalt(III) ions in aqueous solutions complex with NH_3 to produce Co(NH_3)_6^3+. (K_f = 5.0 times 10^31) What will be the concentration of Co^3+ (aq) when Co(NH_3)_6^3+ forms? Will CO_2 S_3 precipitate? (K_sp = 4.0 times 10^-21) precipitate forms no precipitate forms
18. Given the following equilibrium constants, K. (HSO4) = 1.2 x 102 K(CHCO2) = 5.6 x 100 Kw = 1.00 x 10-14 determine the equilibrium constant for the reaction below at 25°C. HSO4 (aq) + CH3CO2 (aq) =30/(aq) + CH3COH(aq) a. 6.7 x 10-12 b. 2.1 x 10-7 c. 1.5 x 10- d. 6.7 x 10 e. 2.1 x 107
Question 7 (1 point) Saved Consider these metal ion/metal standard reduction potentials Cu2(aq)|Cu(s) Ag+1(aq)|Ag(s) Co2(aq)|Co(s) Zn+2(aq)]Zn(s) +0.34 +0.80 V -0.28 V -0.76 V Based on the data above, which one of the species below is the best oxidizing agent? 0 1 Cols) O2) Zn(s) 3) Cutlaq) 04) Culs) 5) Ag+h(aq)
Quiz 4 10) Predict the products of the following single replacement reaction. Zn(s) + CoCl2(aq) A) No reaction occurs B) ZnCo(aq) + Cl2(g) C) Co(s)+ ZnCl2(aq) D) ZnCoCl2(aq) E) CoCl(aq)+ZnCI(aq) 11) What mass of CoH120s (glucose) is needed to prepare 450.mL of a 0.650 M solution of glucose in water? C) 52.7 g D) 0.293 g E) 125 g A) 0.692 g B) 293 g
6 6. Zinc hydroxide, Zn(OH)2. is practically insoluble in pure water. (Kap 3.0 x 10-16) a) Determine the pH of a saturated aqueous solution of Zn(O1H)2. (You should assume that all hydroxide ions in the solution come from the Zn(OH)2: you can ignore the autoionization of water.) (4 pts) b) Zn(OH)2 is less soluble in even very dilute solutions of Zn(NOs)2 due to the common ion effect. Determine the molar solubility of zine hydroxide in a 1.0 x 10-4 M...
4) Consider the following balanced conventional equation. (21 pts) Zn(s) + H2SO, (aq) → Znso. (aq) + H2 (9) Individual oxidation numbers: a. Assign oxidation numbers to each element as indicated by the boxes in H SO, Zn in ZnSOS in Znso. O in ZnSO, and H in H2) (6 pts) b. Write the total ionic equation for the reaction above. (9 pts) ndicated by the boxes above. (i.e. Zn in Zn(s), H c. Write the net ionic equation for...
24. Determine A Sºrxn given the following information: Reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(9) Substance Zn(s) HCl(aq) H2(g) Zn2+(aq) Cl(aq) Sº (J/mol x K) 60.9 56.5 130.58 -106.5 55.10 A) -39.6 J/mol.K B) O J/mol.K C) +39.6 J/mol.K D) -38.2 J/mol.K E) +38.2 J/mol.K
Most questions answered within 3 hours.
-
39.4% of US homes continue to use a landline in addition to cell
phone service. 3...
asked 9 minutes ago -
Starting with benzene, synthesize 1-phenyl-1-butyne.
Show intermediates and reagents.
asked 1 hour ago -
Create a 32-run crossed array design with six control factors
and two noise factors such that...
asked 1 hour ago -
A 500g sample of sand from source A has the following amounts
retained on each sieve....
asked 1 hour ago -
In
your own words, please explain the essay by John Keynes wrote "The
End of Laissez...
asked 1 hour ago -
How are the matrix and pixels related? Why are smaller
pixels better for diagnostic quality?
asked 2 hours ago -
2. An AC generator has 80 rectangular loops on
its armature. Each loop is 11 cm...
asked 2 hours ago -
Please help me with this question. Consider Aldi’s current and
potential geographic markets (see Exhibit 4...
asked 2 hours ago -
What are the main components of the fermentation process and
give an explanation of each? Include...
asked 2 hours ago -
Explain which types of cells in the body (belonging to which
organs, etc.) are sensitive to...
asked 2 hours ago -
A single cable supports an 703-kg elevator car. What is the
tension in the cable when...
asked 2 hours ago -
among the three different ways to link CSS specifications to an
HTML document (inline CSS, document...
asked 2 hours ago