Silver cell

Silver bromoiodide Silver bronze alloys Silver-cadmium alloys Silver-cadmium cell Silver cell Silver chloride... 

Self-Test 12.3B The reaction taking place in the silver cell used in some cameras and wristwatches is Ag20(s) + Zn(s) - 2 Ag(s) + ZnO(s), and the emf of the cell when new is 1.6 V. What is the reaction Gibbs free energy (See Table 12.2.)... 

Two common types of button batteries both use a zinc container, which acts as the anode, and an inert stainless steel cathode, as shown in Figure 11.11 on the next page. In the mercury button battery, the alkaline electrolyte paste contains mercury(II) oxide, HgO. In the silver button battery, the electrolyte paste contains silver oxide, Ag20. The batteries have similar voltages about 1.3 V for the mercury cell, and about 1.6 V for the silver cell. 

Silver is employed for low resistance electrical contacts and conductors, and in silver cell batteries. Antimony is used in lead add storage batteries to improve the workability of the lead and lead oxides. Copper and copper alloy wires, connectors, cables, switches, printed drcuit boards, and transistor and rectifier bases are common throughout the industry. Nickel is used in high resistance heating elements, glass-to-metal seals, batteries, and spedalty steels for power generation equipment Household appliances employ stainless and electroplated steel containing nickel. 

Hydrogen-silver cells are attractive (apart from cost) since the energy density is higher than the hydrogen-nickel analogue. The cell is... 

A silver cell has a cathode made of Ag20. The relatively high potential of a silver cell, with its solid reactants and products, is maintained with great reliability over long periods of time, a feature making it desirable for medical implants such as pacemakers, for hearing aids, and for cameras. 

D) In the zinc cell, the addition of KC1 will have no effect, but in the silver cell, the addition of KC1 will cause the formation of the precipitate AgCl(s). This will decrease the amount of available Ag+ and therefore decrease the voltage. 

Given the half-cell potentials in Table 17.2, calculate the cell potential of (a) the Daniell cell, (b) the copper/silver cell. 

Calculate the potential of a zinc/silver cell in which the zinc electrode is immersed in a 0.0100 M zinc nitrate and the silver electrode is in 0.500 M silver nitrate. Determine which metal is reduced spontaneously. 

Other types of dry cell batteries include the silver cell, which has a Zn anode. Its cathode uses Ag20 as the oxidizing agent in a basic environment. Mercury cells, often used in calculators, also have a Zn anode. The cathode uses HgO as the oxidizing agent in a basic medium (see Fig. 11.15). 

Silver cells — have only solid reactants and products, high emf, long life used in pacemakers, hearing aids, and cameras... 

The Zinc-Copper Cell 21-10 The Copper-Silver Cell... 

Recall that in the zinc-copper cell the copper electrode is the cathode now in the copper-silver cell the copper electrode is the anode. 

Left) A spiral of copper wire was placed in a colorless solution of silver nitrate, AgN03. The silver has been displaced from solution and adheres to the wire. The resulting copper nitrate solution is blue. The same reaction occurs when the two half-reactions are separated in the copper-silver cell (see Figure 21-7). (Right) No reaction occurs when silver wire is placed in a blue copper sulfate solution. The reaction... 

Technology has made modern batteries smaller, safer, and more dependable than our crudely constructed copper-zinc voltaic cell. In fact, the silver cell (Figure 9.11) is sufficiently safe and nontoxic that it can be implanted in the human body as a part of a pacemaker circuit that is used to improve heart rhythm. A rather futuristic potential application of voltaic cells is noted in A Medical Perspective Turning the Human Body into a Battery on page 261. 

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