Electrolysis in electroplating

Electrolysis in electroplating

By Yohanes Teacher

Multiple Choice

Which one of these is the oxidation reaction?

• $$Mg=>\ Mg^{2+}+2e\$$  

• $$O\ +\ 2e\ =\ O^{2-}$$  

Multiple Choice

Which one of these is the oxidation reaction

• $$Cl\ +\ e\ =>\ Cl^-$$  

• $$Li\ =>\ Li^+\ +\ e$$  

Fill in the Blanks

Elements will undergo oxidation reaction when it ... its valence electrons

Multiple Choice

Which one of these is the reduction reaction

• $$K\ =>\ K^-+e$$  

• $$P\ +\ 3e\ =>\ P^{3-}$$  

Multiple Choice

Which one of these is the reduction reaction

• $$Be\ =>\ Be^{2+}+2e$$  

• $$F+e\ =>F^-$$  

Fill in the Blanks

Reduction reaction occur when elements ... electrons to complete its outermost shell.

Electrolysis and Electroplating

Aim:

To answer the following questions :

1. Describe the chemical process of electrolysis

2. Identify the component in electrolysis

3. ​How electrolysis can be beneficial to solve corrosion

Some text here about the topic of discussion

Create a short article/presentationor infographic that describe the purpose, materials, procedure, and implication of Chromium electroplating.

Activity 2

Work in a pair and do research about electrolysis.

​

Find the worksheet in the GD as your guidance​

Activity 1

Activities

Some text here about the topic of discussion

Multiple Choice

Which one is correct defintion of electrolysis

• breaking down of an electrolyte compound using electrical current

• making a compound using electrical current

Multiple Choice

What is the name of the positive electrode?

• cathode

• anode

Multiple Choice

What is the name of the negative electrode?

• Anode

• Cathode

Multiple Choice

Electroplating is a process whereby a metal surface is coated with a non-metal.

• True

• False

Multiple Choice

The electrode that contains the item to be electroplated

• Cathode

• Anode

• ​Electrons flows from the negative terminal of the battery toward the cathode.

• It will resulted an electric force to attract the positive ion of the solution.

• The positive ion is always metals, as a result, the cathode will coated with the metal that compose the solution​

Multiple Choice

Therefore, based on the ilustration in the previous slide, the solution or the electrolyte must contain

• the metal to be plated

• any type of metal

• the plating metal

• no metal ions

Multiple Choice

Which is not a reason for metal plating?

• decorative purposes

• to make the metal stronger

• prevent rust and corrosion

Electroplating never meant to reinforce the strength of the material of metal

Multiple Choice

If you were plating with copper, which electrolyte could be used

• Nickel sulfate

• Magnesium Chloric acid

• Copper sulfate

• Sulfuric acid