Answer: The mass of metallic silver produced by a 1.50
amp current passed through a solution of silver nitrate for 20 minutes is 2.0 g
Explanation:
Moles of electron = 1 mole
According to mole concept:
1 mole of an atom contains number of particles.
We know that:
Charge on 1 electron =
Charge on 1 mole of electrons =
To calculate the time required, we use the equation:
where,
I = current passed = 1.50 A
q = total charge = ?
t = time = 20 minutes = 1200 s (1min=60 s)
Putting values in above equation, we get:
According to stoichiometry:
1 mole of electrons deposit = 108 g of silver
i.e 96500 C of electricity deposit = 108 g of silver
Thus 1800 C of electricity deposit = g of silver
The mass of metallic silver is 2.0 g