What Are Redox Reactions? - VCE Chemistry

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what are redox reactions?

VCE CHEMISTRY PREVIOUS STUDY DESIGN- 2016

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•Redox reactions are one of largest groups of chemical reactions.•Redox = reduction & oxidation.

•Reduction & Oxidation occur simultaneously.•Examples: (1) C3H8 + 5O2 → 3CO2 + 4 H20 **propane, C3H8, gains oxygen (loses hydrogen) to form CO2 **Oxygen, O2 gains hydrogen to form H20 (2) Mg + Cl2 → MgCl2 is a redox reaction. But there is no oxygen or hydrogen involved in this reaction. We need to look for another method for showing that this is a redox reaction.Electron transfer of redox reactions•Oxidation is a loss of electrons.•Reduction is a gain of electrons.•Redox reactions involve the transfer of electrons from one reactant to another. O I L R I G•Example: Combustion of magnesium in oxygen to form magnesium oxide (ionic compound) 2Mg (s) + O2 (g) → 2MgO (s)•Mg → Mg 2+ + 2e- (oxidation)•O2 + 4e- → 2O ^2- (reduction)•Electrons lost by magnesium are accepted by oxygen.In any redox reaction:•The oxidant is the reactant which causes oxidation and is itself reduced.•The reductant is the reactant which causes reduction and is itself oxidised.For the reaction between Mg and O2:•Magnesium is the reductant.•Oxygen is the oxidant.Summary of a typical redox reaction.•Reactions:•Oxidation is a loss of electrons.•Reduction is a gain of electrons•Reactants:•Oxidant undergoes reduction.•Reductant undergoes oxidation. More on redox reactions Quiz Quiz 2 Kahoot quiz- redox reactions Powered by

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Home
Unit 1
- Atomic theory >
  - Inside the atom
  - Electron configuration
  - Nanoparticles
  - Quiz
- The Periodic table >
  - History of the periodic table
  - Modern Periodic table
  - Periodic table trends
- Metals >
  - Properties of Metals
  - Metal reactivity
  - Alloys and extraction of metals
- Ionic bonding >
  - The ionic bond
  - Ionic bonding and formula writing
- Atomic mass and the mole >
  - Atomic mass
  - The Mole
  - Empirical and molecular formula
- Covalent bonding >
  - Properties and bonding
  - VSEPR THEORY
  - Polar and Non polar molecules
  - Intermolecular bonding
  - Carbon lattices
- Organic chemistry >
  - Hydrocarbons
  - Alkanes, alkenes and alkynes
  - Naming organic compounds
  - Functional groups
- Polymers >
  - Types of polymers
  - Polymer properties
  - Revision Unit 1
Unit 2
- Water >
  - Reactions of life
  - Properties of water
  - Heat capacity
  - Latent heat
- Solutions >
  - Water as a solvent
  - Solubility and dissolving
  - Precipitation reactions
  - Solubility curves
  - Concentration
- Acids and Bases >
  - What are acids and bases?
  - Strength of acids and bases
  - pH
  - Dilution and reaction of acids
- Redox reactions >
  - What are redox reactions?
  - Oxidation numbers
  - Metal reactivity and half equations
  - Corrosion
- Analysis for salts in water >
  - Salts in water and mass/mass stoichiometry
  - Gravimetric analysis
  - Limiting and excess reagents
  - Colorimetry and UV/visible spectroscopy
  - AES and AAS
- Analysis of organic compounds in water >
  - Chromatography-paper and TLC
  - Chromatography- Column/HPLC
- Analysis of acids and bases in water >
  - Sources of acids and bases found in water
  - Acid/base calculations
  - Volumetric analysis
Unit 3
- Fuels >
  - Types of fuels
  - Fossil fuels vs biofuels
- Using the energy from fuels >
  - Chemical Energy
  - Energy profile diagrams
  - Heat of combustion
- Combustion of fuels >
  - Gases
  - Universal gas equation
  - Gas stoichiometry
- Redox reactions >
  - Redox Review
  - Oxidation numbers review
  - Review Metal reactivity and half equations
  - Complex redox reactions
- Galvanic cells >
  - What are galvanic cells?
  - Spontaneous reactions
  - Primary and secondary cells
- Fuel cells
- Electrolysis >
  - What is Electrolysis?
  - Industrial production- electrolysis
  - Faraday's Laws
- Rate of chemical reactions >
  - Collision theory
  - Reaction rate
- Equilibrium >
  - What is equilibrium?
  - Le Chatelier's Principle
- Tests and useful websites
Unit 4
- Organic compounds >
  - Organic chemistry - review
  - Stereoisomers
  - More on functional groups
- Reactions of organic compounds >
  - Properties of organic compounds
  - Reactions of alkanes and alkenes
  - Reactions with functional groups
  - Reaction pathways
- Analysis of organic compounds-IR, NMR and MS >
  - IR
  - NMR
  - Mass Spectroscopy
  - Combining techniques
- Analysis of organic compounds- Chromatography, HPLC >
  - Chromatography-paper and TLC
  - Chromatography- Column/HPLC
- Analysis of organic compounds- volumetric analysis >
  - Volumetric analysis
  - Organic acids and bases
- Structure and bonding of food molecules >
  - Fats and oils
  - Carbohydrates
  - Proteins
  - Vitamins
- Metabolism of food in the human body >
  - Enzymes
  - Food metabolism
- The energy content of food >
  - Energy sources
  - Measuring energy
Exam question links
Scientific Reports and Posters
Study score
Chemistry basics
Contact
Remote learning
- Unit 1 resources
- Unit 2 resources
- Unit 3 resources
- Unit 4 resources

Từ khóa » C3h8 Y O2

What Are Redox Reactions? - VCE Chemistry

what are redox reactions?

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