![2. If [Cr3+] = 2.50 M, what concentrations of Zn2+ will make the reaction non-spontaneous at T=33°C? Fill in the blanks! (10](http://img.homeworklib.com/questions/d7869250-f821-11ea-a2cf-0993ef277582.png?x-oss-process=image/resize,w_560)
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2. If [Cr3+] = 2.50 M, what concentrations of Zn2+ will make the reaction non-spontaneous at...
need answers for all questions Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+...
need answers for all questions
Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+ (aq) // Cu2+ (aq) / Cu (+), the correct half reactions are 0 (a) Cr3+ (a) Cr3+ + 3e → Crat (-) electrode; Cu+ 2e → Cu2+ at (+) electrode (b) Cr - 3e → Cr3+ at (-) electrode; Cu2+ + 2e → 2 Cu at (+) electrode Occ) cr (c) Cr + 3e → Cr3+ at (-) electrode; Cu2+ - 2e → Cu...
What is the calculated value of the cell potential at 298K for an electrochemical cell with...
What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Age concentration is 1.28 M and the Zn2+ concentration is 6.17x10+M? 2 Ag+ (aq) + Zn(s)—+2Ag(s) + Zn2+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given true false Submit Answer Retry Entire Group 9 more group attempts remaining What is the calculated value of the cell potential at 298K for an electrochemical cell...
Given the following half-cell potentials, i. Zn2+ + 2 e– → Zn (E° = –0.76 V)...
Given the following half-cell potentials, i. Zn2+ + 2 e– → Zn (E° = –0.76 V) ii. Cr3+ + 3 e– → Cr (E° = –0.74 V) determine the cell potential whose overall redox reaction under standard conditions is 3 Zn(s) + 2 Cr3+(aq) → 3 Zn2+(aq) + 2 Cr(s): * A. –0.80 V B. –0.02 V C. +0.02 V D. +0.80 V
Reaction Eo Ag+(aq)+ e-→ Ag(s) 0.80V Zn2+(aq)+ 2e-→Zn(s) -0.76V What would be the cathode reactant in...
Reaction Eo Ag+(aq)+ e-→ Ag(s) 0.80V Zn2+(aq)+ 2e-→Zn(s) -0.76V What would be the cathode reactant in the Voltaic Cell made from the half-reactions above? Question options: a. Zn2+(aq) b. Ag+(aq) c. Ag(s) d. Zn(s)
37. What is the Ecell at 25°C for the following reaction and is it spontaneous? Zn(s)...
37. What is the Ecell at 25°C for the following reaction and is it spontaneous? Zn(s) + Ni2+ (aq, 10-4 mol L ) → Zn2+ (aq, 0.1 mol L"!) + Ni(s) Ni2+ (aq) + 2e → Ni(s) E"=-0.44 V Zn²+(aq) + 2e → Zn(s) E'= -0.76 V b) 0.32 V, Spontaneous 0.41 V, Spontaneous -0.32 V, Not spontaneous -0.23 V, Not spontaneous 0.23 V, Spontaneous e)
What is the calculated value of the cell potential at 298K for an electrochemical cell with...
What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Ag concentration is 2.68x10-4 M and the Art concentration is 1.06 M ? 3Ag" (aq) + Al(s) +3Ag(s) + Ap+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given: Submit Answer Retry Entire Group 4 more group attempts remaining What is the calculated value of the cell potential at 298K for an electrochemical cell...
Consider the following reaction at 298 K. 3 Cr3(a) Cr(s)>3 Cr(aq) Cr (aq) Which of the...
Consider the following reaction at 298 K. 3 Cr3(a) Cr(s)>3 Cr(aq) Cr (aq) Which of the following statements are correct? Choose all that apply. E cell0 The reaction is reactant-favored. n 3 mol electrons Odelta Go0 Consider the following reaction at 298K. 2 Cr3+ (a Zn (s2 Cr2* (aq)+ Zn2* (aq) Which of the following statements are correct? Choose all that apply O K<1 cell 0 Odelta Go0 OThe reaction is product-favored On-5 mol electrons
Use the following half-reactions to write 3 spontaneous reactions, calculate E°cell for each reaction, what is...
Use the following half-reactions to write 3 spontaneous
reactions, calculate E°cell for each reaction, what is
the n number (number of electrons transferred).
Au+ (aq) + e− → Au
(s) E° = 1.69
V
N2O (g) + 2H+ (aq) + 2 e− →
N2 (g) + H2O (l) E° =
1.77 V
Cr3+ (aq) + 3 e− → Cr
(s) E° = -0.74 V
Question 7 0.36 pts Use the following half-reactions to write 3 spontaneous reactions, calculate Eºcell for...
Consider the following reaction at 298K. 2 Cr3+ (aq) + 2 r (aq) →→2 Cr2+ (aq)...
Consider the following reaction at 298K. 2 Cr3+ (aq) + 2 r (aq) →→2 Cr2+ (aq) + 12 (8) Which of the following statements are correct? Choose all that apply. n=4 mol electrons delta Gº < 0 OK<1 Eºcell < 0 The reaction is product-favored. Consider the following reaction at 298 K. 3 Fe3+ (aq) + Cr(s) – → 3 Fe2+(aq) + Cr3+(aq) Which of the following statements are correct? Choose all that apply. OK<1 n= 3 mol electrons E°...
Given: Zn2+ (aq) + 2e Zn(s); E--0.76 V Cu²+ (aq) +20 Cu(s); E° -0.34 V What...
Given: Zn2+ (aq) + 2e Zn(s); E--0.76 V Cu²+ (aq) +20 Cu(s); E° -0.34 V What is the cell potential of the following electrochemical cell at 25°C? Zn(s) | Zn2+(1.0 M) || Cu2+(0.0010 M) Cu(s) a) greater than 1.10 v b) between 0.76 and 1.10 V c) less than 0.42 V d) between 0.00 and 0.76 V e) between 0.34 and 0.76 V
need answers for all questions
Question 35 (3 points) (35) For galvanic cell: (-) Cr/ Cr3+ (aq) // Cu2+ (aq) / Cu (+), the correct half reactions are 0 (a) Cr3+ (a) Cr3+ + 3e → Crat (-) electrode; Cu+ 2e → Cu2+ at (+) electrode (b) Cr - 3e → Cr3+ at (-) electrode; Cu2+ + 2e → 2 Cu at (+) electrode Occ) cr (c) Cr + 3e → Cr3+ at (-) electrode; Cu2+ - 2e → Cu...
What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Age concentration is 1.28 M and the Zn2+ concentration is 6.17x10+M? 2 Ag+ (aq) + Zn(s)—+2Ag(s) + Zn2+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given true false Submit Answer Retry Entire Group 9 more group attempts remaining What is the calculated value of the cell potential at 298K for an electrochemical cell...
37. What is the Ecell at 25°C for the following reaction and is it spontaneous? Zn(s) + Ni2+ (aq, 10-4 mol L ) → Zn2+ (aq, 0.1 mol L"!) + Ni(s) Ni2+ (aq) + 2e → Ni(s) E"=-0.44 V Zn²+(aq) + 2e → Zn(s) E'= -0.76 V b) 0.32 V, Spontaneous 0.41 V, Spontaneous -0.32 V, Not spontaneous -0.23 V, Not spontaneous 0.23 V, Spontaneous e)
What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Ag concentration is 2.68x10-4 M and the Art concentration is 1.06 M ? 3Ag" (aq) + Al(s) +3Ag(s) + Ap+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given: Submit Answer Retry Entire Group 4 more group attempts remaining What is the calculated value of the cell potential at 298K for an electrochemical cell...
Consider the following reaction at 298 K. 3 Cr3(a) Cr(s)>3 Cr(aq) Cr (aq) Which of the following statements are correct? Choose all that apply. E cell0 The reaction is reactant-favored. n 3 mol electrons Odelta Go0 Consider the following reaction at 298K. 2 Cr3+ (a Zn (s2 Cr2* (aq)+ Zn2* (aq) Which of the following statements are correct? Choose all that apply O K<1 cell 0 Odelta Go0 OThe reaction is product-favored On-5 mol electrons
Use the following half-reactions to write 3 spontaneous
reactions, calculate E°cell for each reaction, what is
the n number (number of electrons transferred).
Au+ (aq) + e− → Au
(s) E° = 1.69
V
N2O (g) + 2H+ (aq) + 2 e− →
N2 (g) + H2O (l) E° =
1.77 V
Cr3+ (aq) + 3 e− → Cr
(s) E° = -0.74 V
Question 7 0.36 pts Use the following half-reactions to write 3 spontaneous reactions, calculate Eºcell for...
Consider the following reaction at 298K. 2 Cr3+ (aq) + 2 r (aq) →→2 Cr2+ (aq) + 12 (8) Which of the following statements are correct? Choose all that apply. n=4 mol electrons delta Gº < 0 OK<1 Eºcell < 0 The reaction is product-favored. Consider the following reaction at 298 K. 3 Fe3+ (aq) + Cr(s) – → 3 Fe2+(aq) + Cr3+(aq) Which of the following statements are correct? Choose all that apply. OK<1 n= 3 mol electrons E°...
Given: Zn2+ (aq) + 2e Zn(s); E--0.76 V Cu²+ (aq) +20 Cu(s); E° -0.34 V What is the cell potential of the following electrochemical cell at 25°C? Zn(s) | Zn2+(1.0 M) || Cu2+(0.0010 M) Cu(s) a) greater than 1.10 v b) between 0.76 and 1.10 V c) less than 0.42 V d) between 0.00 and 0.76 V e) between 0.34 and 0.76 V
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