# Problem: Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction isZn2+(aq) + 2e− → Zn(s)For a large batch of nails, a manufacturer needs to plate a total zinc mass of 4.00 kg on the surface to get adequate coverage.a. How many coulombs of charge are needed to produce 61.2 mol of solid zinc?b. Identify the anode and cathode when plating an iron nail with zinc.

###### FREE Expert Solution

For Part a), we're being asked to calculate how many coulombs of charge is needed to produce 61.2 mol of solid zinc.

We're given the following reaction: Zn2+(aq) + 2e → Zn(s)

Zn(s) must be formed from Zn2+(aq)
Zn2+ needs to gain 2 e- in order to become Zn(s)

We can now calculate the charge needed.

Step 1: Calculate the number of moles e- produced from the reaction (using mole-to-mole comparison)
Step 2: Calculate the charge needed

Required values:

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###### Problem Details

Galvanized nails are iron nails that have been plated with zinc to prevent rusting. The relevant reaction is

Zn2+(aq) + 2e → Zn(s)

For a large batch of nails, a manufacturer needs to plate a total zinc mass of 4.00 kg on the surface to get adequate coverage.

a. How many coulombs of charge are needed to produce 61.2 mol of solid zinc?

b. Identify the anode and cathode when plating an iron nail with zinc.