The weight of silver(at.wt.=108) displaced by a quantity of electricit...
Calculation of Weight of Silver Displaced
To calculate the weight of silver displaced, we need to follow the given steps:
Step 1: Calculate the Amount of Electricity
The amount of electricity required to displace 5600 ml of O2 at STP can be calculated using Faraday's laws of electrolysis:
1 mole of electrons = 1 Faraday = 96500 C
1 mole of O2 at STP = 22.4 L = 22400 ml
1 mole of O2 requires 4 moles of electrons to form (from the balanced chemical equation)
Therefore, the amount of electricity required to displace 5600 ml of O2 at STP can be calculated as:
Amount of electricity = (5600/22400) x 4 x 96500 C
Amount of electricity = 48400 C
Step 2: Calculate the Amount of Silver Displaced
The amount of silver displaced can be calculated using the equation:
Amount of silver displaced = (Amount of electricity/charge on 1 mole of electrons) x (atomic weight of silver/valency of silver)
The charge on 1 mole of electrons = 1 Faraday = 96500 C
The valency of silver = 1 (since it is a monovalent cation)
Therefore, the amount of silver displaced can be calculated as:
Amount of silver displaced = (48400/96500) x (108/1)
Amount of silver displaced = 54.12 g
Conclusion
The weight of silver displaced by a quantity of electricity which displaces 5600 ml of O2 at STP is 54.12 g.