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Choose the overall chemical reaction that takes place in a voltaic cell represented by the the...
Question 1 3.03 pts Assuming the following reaction takes place in an acidic solution, write a balanced equation for the overall reaction. Fe2+ + CrO2-Fe3+ + Crº 8H+2Fe2+ + CrO422Fe+++4H20 OSH* +3Fe2+ + CrO 2 + 3Fe3++C++ 4H20 2Fe2+ CrO42- 2Fe3+ + Cr3+ + 4H20
20.1 Mastery #4 Q2 A voltaic electrochemical cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. Mg(s) + 2Fe3+(aq) ---> Mg2+(aq) + 2Fe2+(aq) What is the reaction that takes place in the anode compartment? What is the reaction that takes place in the cathode compartment? In the external circuit, electrons migrate _____ (from or to) the Fe3+, Fe2+electrode _____ (from or to) the Mg electrode. In the salt bridge, anions migrate _____ (from or to) the Fe3+, Fe2+compartment _____...
Consider the following cell diagram: Pt(s) | Fe3+(aq) , Fe2+(aq) || Cl–(aq) | Cl2(g) | Pt(s) The reaction utilized by this cell is Question 8 options: Fe2+(aq) + 2Cl–(aq) --> Fe(s) + Cl2(g) Fe(s) + Cl2(g) --> Fe2+(aq) + 2Cl–(aq) 2Fe3+(aq) + 2Cl–(aq) --> 2Fe2+(aq) + Cl2(g) Fe3+(aq) + Cl–(aq) --> Fe2+(aq) + 1/2Cl2(g) 2Fe2+(aq) + Cl2(g) --> 2Fe3+(aq) + 2Cl–(aq)
Question 5 (Q3) The cell notation for a voltaic cell with the following redox reaction is: Fe2+ (aq) + 2e → Fe(s) (oxidation) » Cr3+ (aq) + 3e" (reduction) Cr(s) Cr3+ (aq) | Cr (s) "Fe (s) | Fe2+ (aq) Cr3+ (aq) | Cr (s) " Fe2+ (aq) | Fe (s) Fe2+ (aq)| Fe (s) "Cr (s) [Cr3+ (aq) II Cr(s) | Cr3+ (aq) Fe2+ (aq)| Fe (s) None of the above
QUESTION 8 Based on the following cell notation, write a balanced and complete redox reaction: Ca), sat. KCI Fe, Fe2 |Pt Ag) AgCl O A. Ag(s) +CI-(aq)Fe2+ AgCI (s) +Fe3+ = O B. AgCl (s)+ Fe2+ = Ag(s) +CI-(aq) Fe3+ CAg(s) +CI-(aq) + Fe2+ = AgCl(s) + Fe3+ D.Ag(s)CI-(aq) + Fe3+ AgCl(s)+ Fe2+ E. Ag(s)+CI-(aq)+2Fe2+= AgCI(s) +2FE3+
Table 20.2 Half-reaction E° (V) Cr3+ (aq) + 3e- → Cr (s) -0.74 Fe2+ (aq) + 2e- Fe () -0.440 Fe3+ (aq) + e- → Fe2+ (s) +0.771 Sn4+ (aq) + 2e- Sn2+ (aq) +0.154 The standard cell potential (Eºcell) for the voltaic cell based on the reaction below is V. Cr (s) + 3Fe3+ (aq) + 3Fe2+ (aq) + Cr3+ (aq) A) -1.45 B) +2.99 C) +1.51 D) +3.05 E) +1.57
A voltaic cell utilizes the following reaction: 2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq). emf of this cell under standard conditions E∘ = 0.771 V What is the emf for this cell when [Fe3+]= 3.70 M , PH2= 0.95 atm , [Fe2+]= 1.0×10−3 M , and the pH in both compartments is 3.95? Express your answer using two significant figures.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Table 20.2 Half-reaction E° (V) Cr3+ (aq) + 3e- Cr(s) -0.74 Fe2+ (aq) + 2e →Fe (s) -0.440 Fe3+ (aq) + e- Fe2+ (8) Sn4+ (aq) + 2e- Sn2+ (aq) +0.154 1) Which of the following reactions will occur spontaneously as written? A) 35n4+ (aq) + 2Cr (s) +2013+ (aq) + 3Sn2+ (aq) B) 3Fe (s) + 2Cr3+ (aq) →2Cr (s) + 3Fe2+ (aq) C)...
QUESTIONS AND PROBLEMS Voltaic Cells 1. Write a balanced chemical equation for the overall cell reaction represented as a. (Pt) H2/H (Pt) Fe +/Fe2+ b. Cd/Cd2+ | Ni?+/Ni c. (PL) CI-/C1, | (Pt) MnO,-/Mn an aqueous gram of the Write the overall equa 6. Follow tl cell in which aqucous solt rrverale The
Which chemical species is reduced in a voltaic cell represented by the the following cell diagram? Zn(s) | Zn2+(aq) || H+(aq), HCOOH(aq) | CO2(g) | Pt(s) CO2(g) Zn(s) H(aq) Zn2+(aq) OHCOOH(aq)