If the current is used, find the time taken for 5.5g of gold to be deposited. ( Au = 197, 1 faraday = 96500c )
To find the time taken for gold to be deposited, we need to use Faraday's law of electrolysis.
The formula for Faraday's law of electrolysis is:
Mass of substance deposited = (Current × Time × Equivalent mass) / 96500
Where:
Mass of substance deposited = 5.5g (given)
Current = ?
Time = ?
Equivalent mass of gold (Au) = Atomic mass / Valence electrons
Atomic mass of gold (Au) = 197 (given)
Valence electrons of gold (Au) = 1 because in its most common oxidation state, gold has a valence of +1
So, the equivalent mass of gold (Au) = 197 / 1 = 197g/mol
By rearranging the formula, we can find the time taken:
Time = (Mass of substance deposited × 96500) / (Current × Equivalent mass)
Plugging in the values:
Time = (5.5g × 96500) / (Current × 197g/mol)
Since the current is not given, we cannot directly calculate the time.