Battery
A current is produced basically by the flow of electrons. The dry cell, or Leclanche battery works by creating two electrochemically different ends (an anode and a cathode) so current passes through when a complete circuit is connected. This involves non-renewable compounds which initiate reactions at both ends of the cell. These reactions allow the flow of ions which ultimately produce the current.Diagram 1: The make-up of a dry cell Diagram 1 shows the composition of the cell initially. As the cell is used zinc ions are formed and ammonium ions are discharged. The zinc reaction occurs at the anode: Zn „_ Zn2+ + 2e- While at the cathode: NH4+ + MnO2 + H2O + e- „_ Mn(OH)3 + NH3 The reduction of Manganese from 4+ to 3+ produces a voltage of about 1.5V. The dry cell is the cheapest commercially available battery. Depending on the relative size, each battery can be worth less than $3. In our fast paced modern world of electricity and communication the dry cell battery is widely used in items such as torches
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Some common words found in the essay are:
COST PRACTICALITY, BATTERY CHEMISTRY, V4+ V5+, Green Batteryˇ¨, IMPACT SOCIETY, ENVIRONMENTAL IMPACT, Cathode V4+, CELL CHEMISTRY, dry cell, vanadium redox, IMPACT VRB, environmental impact, impact society, V2+ V3+, + e-, dry cell battery, voltage 15v, cost practicality, redox battery, constant source, redox cell, vanadium redox battery, vanadium redox cell,
Approximate Word count = 733
Approximate Pages = 3 (250 words per page double spaced)
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