Electrolysis (Higher) Part 1

Categories these elements to the charges their ions become

Groups:

(a) +1

,

(b) +2

,

(c) -1

,

(d) -2

• Li

• Br

• Na

• Mg

• Ca

• K

• Cl

• O

• F

What is the correct formula for Potassium Fluoride

• KF

• K₂F

• KF₂

• K(F₂)₂

What is the correct formula for Calcium Fluoride

• CaF

• Ca₂F

• CaF₂

• Ca(F₂)₂

What is the correct formula for Calcium Nitrate

• CaNO₃

• Ca₂NO₃

• Ca2NO₃

• Ca(NO₃)₂

What is the correct formula for Copper (II) Oxide

• CuO

• CuO₂

• Cu₂O

• CuCuO

Match the following

• HNO₃

• Nitric Acid

• HCl

• Calcium Sulfate

• CaSo₄

• Sulfuric Acid

• H₂SO₄

• Sodium Hydroxide

• NaOH

• Hydrochloric Acid

Reorder the following from most reactive (left) to least reactive (right)

• K

• Au

• Cu

• Mg

• F

​ (a)   occurs when an atom has lost electrons. ​ (b)   is the gain of electrons. Ca²⁺ + ​ (c)   --> Ca is an example of ​ (d)   as it has ​ (e)   electrons.

• Oxidation
• Reduction
• 2e-
• gained
• e-
• lost

In electrolysis the ​ (a)   ions are attracted to the negative ​ (b)   . Opposite charges ​ (c)   due to ​ (d)   forces.

• positive
• electrode
• attract
• electrostatic
• negative
• electrolyte
• repel
• intermolecular

What will be produced at each electrode during the electrolysis of:

Molten Copper Oxide

Positive Electrode: ​ (a)  

Negative Electrode: ​ (b)  

• Oxygen
• Copper
• Hydrogen 
• Chlorine
• Oxide