Redox Reactions Flashcards
What is a redox reaction?
This is a reaction in which one of the reactants is reduced and another oxidized simultaneously.
The substance that gets oxidized is the reducing agent and the substance that gets reduced is the oxidizing agent.
What is oxidation (in terms of electrons)?
Oxidation is the loss of electrons by a substance during a chemical reaction.
When a substance loses electrons its oxidation number increases.
100 DOR
What is reduction (in terms of electrons)?
Reduction is the gain of electrons by a substance during a chemical reaction.
When a substance loses electrons its oxidation number drops.
100 DOR
What is oxidation and reduction in terms of hydrogen and oxygen?
- Oxidation is the gain of oxygen or the loss of hydrogen by a substance during a chemical reaction
- Reduction is the loss of oxygen or the loss of hydrogen by a substance during a chemical reaction.
What is an oxidizing agent?
This is a substance that gains electrons during a chemical reaction.
What is a reducing agent?
This is a substance that loses/donates electrons during a chemical reaction.
What is Oxidation number (Oxidation state)?
The oxidation number of an element is the charge its atom would have if all its bonds were broken such that the more electronegative atom kept all the electrons in the bond.
The oxidation state can be zero, positive or negative.
What is a Disproportionation reaction?
This is a chemical reaction in which the same substance is simultaneously oxidized and reduced.
What does Concentration as %( w/w) mean?
This is the mass of solute in grams contained in 100g of solution.
What does Concentration as %(w/v) mean?
This is mass of solute in grams present in 100cm3 of solution.
What does Concentration as %(V/V) mean?
This is the volume of a solute in cm3 per 100 cm3 solution.
It is only used when both the solute and the solvent are in liquid state.
