Unit 1 - Higher Chemistry, Oxidizing
and Reducing Agents Questions and
Answers
Oxidation – answer loss of electrons
reduction – answer gain of electrons
Good reducing agents are? – answer metals elements are good reducing agents as
they have a low electronegativity which means they will lose their outer electrons easily
Good oxidising agents are? – answer non-metal elements are good oxidising agents as
they have a high electronegativity which means they will gain electrons more easily
What is a reducing agent? – answer is a substance which donates electrons
What is an oxidizing agent? – answer is a substance which accepts electrons
Example of a reducing agent – answer carbon monoxide, used in the industrial
extraction of iron from iron ore as carried out in a blast furnace
what are the most powerful oxidising agents? – answer hydrogen peroxide, dichromate
ions and permanganate ion
why does potassium permanganate solution must be acidfied?
>what is required to happen? - answerto produce water, by the presence of H ions to
reduces the permanganate ion
what is hydrogen peroxide used as? - answerbleach, to oxidise coloured compounds
what is potassium permanganate used as? - answerantiseptic and disinfectant which
can lead to kill fungi and bacteria and inactivate some viruses
and Reducing Agents Questions and
Answers
Oxidation – answer loss of electrons
reduction – answer gain of electrons
Good reducing agents are? – answer metals elements are good reducing agents as
they have a low electronegativity which means they will lose their outer electrons easily
Good oxidising agents are? – answer non-metal elements are good oxidising agents as
they have a high electronegativity which means they will gain electrons more easily
What is a reducing agent? – answer is a substance which donates electrons
What is an oxidizing agent? – answer is a substance which accepts electrons
Example of a reducing agent – answer carbon monoxide, used in the industrial
extraction of iron from iron ore as carried out in a blast furnace
what are the most powerful oxidising agents? – answer hydrogen peroxide, dichromate
ions and permanganate ion
why does potassium permanganate solution must be acidfied?
>what is required to happen? - answerto produce water, by the presence of H ions to
reduces the permanganate ion
what is hydrogen peroxide used as? - answerbleach, to oxidise coloured compounds
what is potassium permanganate used as? - answerantiseptic and disinfectant which
can lead to kill fungi and bacteria and inactivate some viruses
