When the Ag* concentration is 1.21 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.605V. What is the Cr3+ concentration? 3Ag (aq) + Cr(s) 3Ag(s) + Cr3+(aq) } Answer: M
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- The saturated calomel electrode. abbreviated SCE. is often used as a reference electrode in making electrochemica1 measurements. The SCE is composed of mercury in contact with a saturated solution of calomel (Hg2Cl2). The electrolyte solution is saturated KCI. is +0.242 V relative to the standard hydrogen electrode. Calculate the potential for each of the following galvanic cells containing a saturated calomel electrode and the given half-cell components at standard conditions. In each case. indicate whether the SCE is the cathode or the anode. Standard reduction potentials are found in Table 17.1. a. Cu2++2eCu b. Fe3++e-Fe2+ c. AgCl+e-Ag+Cl- d. Al3++3eAl e. Ni2++2eNiWhen the Pb2+ concentration is 1.10 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.361V. What is the Mg2+ concentration?Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq) Answer:___MWhen the Pb2+ concentration is 1.28 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.362V. What is the Mg2+ concentration?Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq)Answer: _________ M
- When the Hg2+ concentration is 1.25 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 3.340V. What is the Mg2+ concentration? Hg2+(aq) + Mg(s) Hg(l) + Mg2+(aq)Answer: MWhen the Ag+ concentration is 5.25×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.975V. What is the Mg2+ concentration?2Ag+(aq) + Mg(s)--->2Ag(s) + Mg2+(aq)Answer: _____MWhen the Ag+ concentration is 1.29 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.658V. What is the Zn2+ concentration? 2Ag+(aq) + Zn(s)2Ag(s) + Zn2+(aq) Answer: M Submit Answer
- When the Cu2+ concentration is 3.82×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.893V. What is the Al3+ concentration?3Cu2+(aq) + 2Al(s)----> 3Cu(s) + 2Al3+(aq)Answer: ____ MWhen the Pb2+ concentration is 1.13 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.357V. What is the Mg2+ concentration? Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq) Answer: M Submit AnswerWhen the Pb2+ concentration is 1.13 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.357V. What is the Mg2+ concentration? Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq) Answer: M
- When the Ag+ concentration is 1.29 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.658V. What is the Zn2+ concentration? 2Ag+(aq) + Zn(s)2Ag(s) + Zn2+(aq) Answer: MWhen the Ag+ concentration is 1.07 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.665V. What is the Zn2+ concentration? 2Ag+(aq) + Zn(s) → 2Ag(s) + Zn2+(aq) Answer:_____ MWhen the Hg2+ concentration is 2.39×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.509V. What is the Zn2+ concentration? Hg2+(aq) + Zn(s) Hg(l) + Zn2+(aq)Answer: M