How effective are Zink and Nickel coatings as a protection for Iron against acid rain?
Homework Answers
Ans :
Iron gets rusted much faster when exposed to the acid rain.
Zinc-nickel coating serves to prevent this corrosion excellently by forming a protective barrier between the iron surface and harsh environment.
These coatings are so effective that they leave no opportunity for the iron to rust.
They provide high resistance to corrosion and make the object hard and tough.
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effective are Zink and Nickel coatings as a protection for Iron
against acid rain?
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The effects on Zink, Copper, Nickel, Aluminum, and Iron.
3. What generalization can you make about the effect of changing the concentration of an acid? Suppose the acid concentrations were reduced 100-fold, 1000-fold, or even more? "quation -...) wunci. One product is zinc chloride, ZnCl. 3. What generalization can you make about the effect of changing the concentration of an acid? Suppose the acid concentrations were reduced 100-fold, 1000-fold, or even more?!
2. Corrosion in neutral medium Some item is made of two metals -zink and nickel which are in contact with each other. The item corrosion procesg ergoes corrosion process in neutral moisture containing environment. What metal is going to oxidize W hat chemical element (depolizer) is going to reduce? Write down redox equations for both processes: for metal: for depolizer -0.23 V 3. Protection metal against Corrosion (anodic coating) Opt right anodic coating for Pb from the following metals: Pt,...
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Choose an example of electrolysis acid rain dissolving limestone powering a remote control with an alkaline dry cell iron rusting in salt water potassium metal reacting vigorously with water to generate hydrogen gas recharging a nickel-metal hydride battery
Question 3 Discuss with the aid of clearly labelled diagrams how earthing together with a means of automatic disconnection provides protection against electric shock by indirect contact.
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