(c) Oxidising and Reducing agents Flashcards
What is an oxidation reaction?
One in which electrons are lost.
What is a reduction reaction?
One in which electrons are gained.
What is a REDOX reaction?
A reaction in which both reduction and oxidation occur.
What is an oxidising agent?
A substance which accepts electrons. Oxidising agents are reduced.
What is a reducing agent?
A substance which donates electrons. Reducing agents are oxidised.
Substances with a high electronegativity value are likely to be:
Oxidising agents.
Substances with a low electronegativity value are likely to be:
Reducing agents.
Where are the strongest oxidising agents found on the electrochemical series?
Bottom left.
Where are the strongest reducing agents found on the electrochemical series?
Top right.
Which group on the periodic table are the strongest reducing agents?
Group 1.
Which group on the periodic table are the strongest oxidising agents?
group 7.
What are some examples of compound oxidising agents?
Potassium permanganate
Potassium dichromate
Bleach
Chlorine.
What are some examples of compound oxidising agents?
Carbon monoxide.
What is a standard solution?
A solution of accurately known concentration.
How is a standard solution prepared?
Accurately weigh out the substance in a small beaker.
Dissolve in a small volume of deionised water.
Transfer to a standard flask, along with the washings from the flask.
Add deionised water up to the mark using a dropper for the last drops. Make sure the bottom of the meniscus is at the graduated mark.
Stopper the flask and scientifically invert.
