Electrolysis term 2 lss ace

Electrolysis Han Ming Xuan 1P1 (9)

Purpose of Experiment ,[object Object],[object Object]

Fundamentals first… Subatomic particle with +ve charge, resides with nucleus Subatomic particle with –ve charge Subatomic particle with no net electric charge Basic unit of a chemical element

An atom ,[object Object],[object Object],[object Object],[object Object]

An electrolytic cell ,[object Object]

Uses of Electrolysis ,[object Object]

Basics of Electrolysis References: Chemistry Insights ‘O’ Level 2 nd Edition

What is the Anode? Attracted to

What is the Cathode? Attracted to

What is an oxide? ,[object Object],Nitrous Oxide N 2 O Iron oxide Fe 2 O 3 Magnesium Oxide MgO

Humphry Davy Place of birth: Cornwall, England Date of Birth: 17 th December 1778 Passed away: 29 th May 1829 (age 50) Who is he?: English chemist

Michael Faraday Country of Birth: South London Date of Birth: 22 September 1791 Passed away: 25 August 1867 (75 years old) Who is he? : Chemist and Physicist who contributed significantly to the study of electromagnetism and electrochemistry.

Faraday’s Law of Electrolysis ,[object Object],[object Object],[object Object],[object Object]

Oxidation {gain oxygen, lose hydrogen} ,[object Object],[object Object],[object Object]

Reduction {lose oxygen, gain hydrogen} ,[object Object],[object Object],[object Object],[object Object],This process can include both of the redox reactions. All extraction of metals by heating metal oxides with carbon are redox reactions.

Apparatus ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Anode after 5 days ,[object Object]

Cathode (-ve) ,[object Object]

Cathode after 5 days ,[object Object]

Electrolysis of Sodium Chloride

Dangers ,[object Object],Hydrogen gas(H) Chlorine gas (Cl)

Actual result ,[object Object]

Cl=Chlorine gas ,[object Object],[object Object],[object Object],[object Object],[object Object]

Cl=Chlorine gas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Symptoms of exposure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What to do when exposed ? ,[object Object],[object Object],[object Object],Do not freak out, stay calm

Dangers ,[object Object],[object Object],[object Object],Like a non-luminous flame, hydrogen fire is almost invisible, which can lead to accidental burns.

Experiment No.2 Electrolysis of Sodium Bicarbonate solution

Result of experiment ,[object Object],[object Object],[object Object]

Anode (+ve) ,[object Object],Before After

Cathode (-ve) ,[object Object],Before After

Sodium Bicarbonate What is it made up of ?

Bicarbonate Ion ,[object Object]

Other References ,[object Object],[object Object],[object Object]

Electrolysis term 2 lss ace

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