± Introduction to Electroplating Galvanized nails are iron nails that have been
ID: 588159 • Letter: #
Question
± Introduction to Electroplating Galvanized nails are iron nails that have been plated with zinc to grevent rusting. The relevanid reaction is For a large botch of nails, a manufachurer needs to plate a total zinc mass of 1.80 kg on the surface to get adequate coverege. Part A Zn2+ (aq) + 2e-Zn(s) Learning Goal: To relate oument, ime, charge, and mans for Electroplating is a form of electrolysis in which a metal is deposhed on the surface of another metal. To quantily electrolysis, use the following relationships Eleche arrent measured in amperes (A) which expresses the amount of charge, in coulombs (C). that fows per second (s) How many moles of zinc are in 1.80 kg of rine? Express your answer to three significant figures and include the appropriate units ·Hints 27 5 mol Another unit of charge is the faraday (F), which is equal to a mole of electrons and is related to charge in My Answers Give Up coulombs as folows IF= 1 mol e--96, 500 C h Correct Part B How many coulombs of charge are needed to produce 27 5 mol of solid zinc? Express your answer to three significant figures and include the appropriate units Hints 56 mol My. Answers Give Up Incorrect: Try AgainExplanation / Answer
Part B:
The corresponding equation will be
Zn2+ + 2e(-) -------> Zn
As it can be seen from the equation 1 mole of Zn is deposited by 2F of electricity ...
And, as 1F = 96500 C
Therefore, 27.5 mole of Zn will be deposited by charge
= 96500 X 2 X 27.5 Coulombs
= 5307500 Coulombs
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.