Question

You work for a cutlery manufacturer who wants to electrolytically precipitate 0.500 g of silver onto each piece of a batch of 250 forks. The preferred electrolytic solution for silver is AgCN(aq). Aqueous AgCN is purchased as a 2.50 M solution. How many mL of AgCN(aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks

Answer 1

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.

Step-by-step explanation:

Mass of silver to be precipitated on ecah spoon = 0.500 g

Number of silver spoons = 250

Total mass of silver = 250 × 0.500 g = 125 g

`Moles (n)=Molarity(M)* Volume (L)`

Moles of AgCN = n =
`(125 g)/(134 g/mol)=0.9328 mol`

Volume of AgCN solution =V

Molarity of the AgCN = 2.50 M

`V=(0.9328 mol)/(2.50 M)=0.3731 L=373.1 mL`

(1 L = 1000 mL)

373.1 mL of AgCN (aq) must be poured into your electrolysis vat to ensure you have sufficient Ag to plate all of the forks.