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Consider the voltaic cell Mg
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General Chemistry: Principles and Modern Applications (11th Edition)
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- What is the cell potential (Ecell) of a spontaneous cell that is run at 25C and contains [Cr3+] = 0.10 M and [Ag+] = 1.0 104 M?arrow_forwardCalculate the cell potential of a cell operating with the following reaction at 25C, in which [MnO4] = 0.010 M, [Br] = 0.010 M. [Mn2] = 0.15 M, and [H] = 1.0 M. 2MNO4(aq)+10Br(aq)+16H+(aq)2MN2(aq)+5Br2(l)+8H2O(l)arrow_forwardWhat is the standard cell potential you would obtain from a cell at 25C using an electrode in which I(aq) is in contact with I2(s) and an electrode in which a chromium strip dips into a solution of Cr3(aq)?arrow_forward
- How is the pH scale defined? What range of pH values corresponds to acidic solutions? What range corresponds to basic solutions? Why is pH = 7.00 considered neutral? When the pH of a solution changes by one unit, by what factor does the hydrogen ion concentration change in the solution? How is pOH defined? How arc pH and pOH for a given solution related? Explain.arrow_forwardGalvanic cells harness spontaneous oxidationreduction reactions to produce work by producing a current. They do so by controlling the flow of electrons from the species oxidized to the species reduced. How is a galvanic cell designed? What is in the cathode compartment? The anode compartment? What purpose do electrodes serve? Which way do electrons always flow in the wire connecting the two electrodes in a galvanic cell? Why is it necessary to use a salt bridge or a porous disk in a galvanic cell? Which way do cations flow in the salt bridge? Which way do the anions flow? What is a cell potential and what is a volt?arrow_forwardConsider the following galvanic cell: A 15 0-mole sample of NH is added to the Ag compartment (assume 1.00 L of total solution after the addition). The silver ion reacts with ammonia to form complex ions as shown: Ag+(aq)+NH3(aq)AgNH3+(aq)K1=2.1103AgNH3+(aq)+NH3(aq)Ag(NH3)2+(aq)K2=8.2103 Calculate the cell potential after the addition of 15.0 moles of NH3.arrow_forward
- Consider the galvanic cell: Pt(s) | H2(1 atm)|H*(1 M) || CI(1 M) | H82CII2(s)|Hg(1) Which of the following changes to the cell would cause the cell potential to increase? O increase the Pt mass decrease the pH O increase the pH O decrease the Pt massarrow_forwardGive the standard line notation for each cell. (a) 2 IOs (ag) + 10 Fe²+ (ag) + 10 H* (ag) = 10 Fe+(ag) + I (ag) + 5 H,O(1) O Pt(s) | Fe?+ (ag), Fe³* (ag) || IO3¬(ag), H* (ag), I2 (aq) | Pt(s) O Pt(s) | Fe?+ (aq), IOs (ag), H* (aq) || Fe³+ (aq), I2 (aq) | Pt(s) O Pt(s) | I03 (ag), H* (ag), I2 (aq) || Fe2+ (ag), Fe³+ (aq) | Pt(s) O Pt(s) | Fe+ (ag), I2 (aq) || Fe²+ (ag), IO3-(ag), H* (aq) | Pt(s) (b) Co(s) + 2 Ag* (ag) = Co2+ (aq) + 2 Ag(s) Co(s) | Co2+ (ag) || Ag*(aq) | Ag(s) O Ag(s) | Ag* (aq) || Co+ (ag) | Co(s) O Ag(s)| Co²+ (aq) || Ag* (aq) | Co(s) O Co(s) | Ag*(ag) || Co2+ (ag) | Ag(s)arrow_forward1) Consider the galvanic cell, Zn(s) | Zn2+(aq) || Pb2+(aq) | Pb(s). Which one of the following changes to the cell would cause the cell potential to increase (i.e., become more positive)? A) increase the [ Zn2+] concentration B) increase the [Pb2+] concentration C) increase the mass of Zn(s) D) decrease the mass of Zn(s)arrow_forward
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