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What factors might affect the production of electricity in a galvanic…
What factors might affect the production of electricity in a galvanic cell?
Surface area of electrolyte
Voltage
Concentration of electrolyte
The electrolyte concentration affects the voltage and the current by the change in the electrical conductivity
The lower concentrations of electrolytes will lower the potential voltage of a cell - lowering the concentration decreases the voltage produced
electrolyte concentration affects density
Depth of electrode in electrolyte
Distance between electrodes
Time spent in solution
Type of electrolyte
pH of solution
Affecting the pH value of the electrolyte alters the H+ ion concentration of the solution, which means the degree of competition between the copper ions and electrons at the sit of the cathode is influenced
Temperature of solution
the higher the temperature, the more voltage the galvanic cell will produce
this is because there is a faster rate of reaction due to higher collision
the lower the temperature the faster the battery runs down and less voltage is produced
If the temperature is too low there will be less voltage produced too
for every 10 degree increase, there will be double the rate of reaction
Reactivity of metal
using the metal activity series the metals can be determined whether they are more reactive or not and then whether they can produce a stronger voltage
aluminium is not very reactive so not helpful to create a stronger voltage, whereas zinc is very good to use due to its high reactivity
the more reactive the metal, the stronger the voltage produced
two very very good metals to use in a galvanic cell are zinc and copper due to their reactivity