Electrochemistry

Question 1

What is Metallic Conduction?

Answer 1

In metallic conduction, mobile electrons in the electron pool carry the electric current through the metal.

Question 2

What is Electrolytic Conduction?

Answer 2

In electrolytic conduction, mobile ions, which are no longer held together by ionic bonds, carry the electric current through the electrolyte.

Question 3

What are the differences in chemical changes between metallic and electrolytic conduction?

Answer 3

Metallic Conduction: Conducted by mobile electrons(valence eletrons) in metals, which move freely within the metal lattice.

Electrolytic Conduction: Conducted by mobile ions in solution, where ions are free to move in the electrolyte.

Question 4

what is an electrotyle

Answer 4

A compound that forms ions when molten or in aquesous solution

Question 5

what are conductors

Answer 5

Conductors are substances whoch allow electrivty to pass through

Question 6

How are electrolytes classified based on their conductivity?

Answer 6

Strong Electrolytes: Fully ionized when dissolved in water, resulting in a high concentration of ions. Examples include solutions of ionic compounds, strong acids strong alkalis, and molten ionic compounds.

Weak Electrolytes: Only partially ionized when dissolved in water, leading to a low concentration of ions. Examples include weak acids and weak alkalis.

Question 7

what is electrolysis

Answer 7

The chemical change which occurs when an electric current is passed throygh an electrolyte

Question 8

what is a cathode

Answer 8

A cathode is the negative electrode

Question 9

what is anode

Answer 9

An anode is a positive electrode

Question 10

what is an electrode

Answer 10

Electrodes are used during eletctrolysis to conduct electricity in and ouy of the electrolyte

Question 11

How do you identify ions present in electrolytes?

Answer 11

In electrolytes, ions are identified based on the compounds dissolved in the solution.

Question 12

How do you predict the electrode to which an ion will drift?

Answer 12

The direction of ion drift during electrolysis is determined by the charge of the ions and the polarity of the electrodes.

Positive ions (cations) are attracted to the negative electrode (cathode), while negative ions (anions) are attracted to the positive electrode (anode).

Question 13

How do you predict chemical reactions using the electrochemical series?

Answer 13

The electrochemical series ranks substances based on their tendency to gain or lose electrons, which helps predict which substance will undergo oxidation or reduction reactions.

Substances higher in the series have a greater tendency to lose electrons and undergo oxidation, while those lower in the series tend to gain electrons and undergo reduction.

Using the electrochemical series, you can predict that zinc (Zn) will undergo oxidation when reacting with copper(II) sulfate (CuSO4), while copper (Cu) will undergo reduction.

Question 14

What principles are related to electrolysis?

Answer 14

Concentration of electrolyte:

Type of electrode:

Position of ions in the electrochemical series:

Question 15

How does concentration affect electrolysis

Answer 15

Higher concentrations of ions lead to increased conductivity and faster electrolysis.

Question 16

How does the type of electrode affect eletroylsis

Answer 16

Active electrodes participate in the reaction, while inert electrodes do not chemically react.

Question 17

How does posistion of electron in electrochemical series affect eletrolysis

Answer 17

The lower the ion in the electrochemical series of anions, the more likely it is to be preferentially discharged.

Ions at the top of series are the hardest to discharge because they are the most stable.

Question 18

What is the Faraday constant?

Answer 18

The faradady constant is the size of the elctrical charge on one of electrons
i.e96,300Cmol

Question 19

What industrial process involves using electrolysis for extracting reactive metals from their ores?

Answer 19

Electrolysis is used in the extraction of reactive metals like aluminum and sodium from their ores.

Metals high in the series, like aluminum and sodium, are extracted via electrolysis because they require large amounts of energy to reduce them from their ores.

Question 20

How is electrolysis utilized in the purification of metals?

Answer 20

Electrolysis is employed to purify metals by removing impurities.

Question 21

What is electroplating, and how is electrolysis involved in this process?

Answer 21

Electroplating involves coating a conductive object with a thin layer of metal. Electrolysis is used in this process to deposit the metal coating onto the object’s surface, enhancing its appearance, corrosion resistance, or conductivity.

Question 22

What is anodizing, and how does electrolysis play a role in this industrial process?

Answer 22

Anodizing is a process where a metal surface is converted into a durable and corrosion-resistant oxide layer through electrolysis.