When the Hg2+ concentration is 2.22×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.486V. What is the Cr³+ concentration? 3Hg²*(aq) + 2Cr(s)3Hg(1) + 2C1³*(aq) Answer: M

When the Cu2+ concentration is 1.35 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.610V. What is the Mn2+ concentration? 2+ Cu²*(aq) + Mn(s)→ Cu(s) + Mn²*(aq) Answer: M

What is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the H2 pressure is 2.22×10-3 atm, the H† concentration is 1.38M, and the Cr3+ concentration is 3.60×10-4M ? 6.00H*(aq) + 2Cr(s)→3H2(g) + 2C1³*(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given:

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Zn(s) │ Zn2+(aq, 0.10 M) ║ Zn2+(aq, 0.50 M) │ Zn(s) The concentration cell above was allowed to operate until the cell reaction reached equilibrium. What are the cell potential and the concentrations of zinc(II) in each half-cell for the cell now?

Consider the reaction corresponding to a voltaic cell and its standard cell potential. Zn(s)+Cu2+(aq)⟶Cu(s)+Zn2+(aq)Zn(s)+CuX2+(aq)⟶Cu(s)+ZnX2+(aq)          Eocell=1.1032 VEcello=1.1032 V What is the cell potential for a cell with a 2.344 M solution of  Zn2+(aq)ZnX2+(aq)  and 0.1701 M solution of  Cu2+(aq)CuX2+(aq)  at 441.2 K?

When the Ag+ concentration is 4.19×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.257V. What is the Al3+ concentration? 3Ag+(aq) + Al(s)3Ag(s) + Al3+(aq)Answer: M

A voltaic cell consists of a Zn/Zn2+Zn/Zn2+ half-cell and a Ni/Ni2+Ni/Ni2+ half-cell at 25 ∘C∘C. The initial concentrations of Ni2+Ni2+ and Zn2+Zn2+ are 1.30 molL−1molL−1 and 0.110 molL−1molL−1, respectively. Zn2+(aq)+2e−→Zn(s)E∘=−0.76VZn2+(aq)+2e−→Zn(s)E∘=−0.76VNi2+(aq)+2e−→Ni(s)E∘=−0.23V What is the initial cell potential? and units What is the cell potential when the concentration of Ni2+Ni2+ has fallen to 0.600 molL−1molL−1?  and units What are the concentrations of Ni2+Ni2+ and Zn2+Zn2+ when the cell potential falls to 0.46 VV?    and units

When the Cu2+ concentration is 1.47 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.211V. What is the Zn2+ concentration? Cu2+(aq) + Zn(s)→ Cu(s) + Zn2+(aq) Answer: M