How many seconds would it take to deposit 17.3 g of ag (atomic mass = 107.87) from a solution of agno3 using a current of 10.00 amp?

a. 3.09  103 s

b. 7.74  102 s

c. 4.64  103 s

d. 1.55  103 s

e. 5.16  102 s?

Data Given:

Time = t = ?

Current = I = 10 A

Faradays Constant = F = 96500

Chemical equivalent = e = 107.86/1 = 107.86 g

Amount Deposited = W = 17.3 g

Solution:

According to Faraday's Law,

W = I t e / F

Solving for t,

t = W F / I e

Putting values,

t = (17.3 g * 96500) : (10 A * 107.86 g)

t = 1547.79 s

t = 1.54 * 10³ s