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The Steel
Story
Topic 4 Unit F334

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In a redox reaction one chemical is reduced and another oxidised.
O xidation R eduction I s I s L oss G ain
A reducing agent donates electrons to reduce something ­ and gets oxidised itself. The
more powerful a reducing agent is, the more easily it can be oxidised.…

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Atoms in elements are in oxidation state zero
In simple ions the oxidation state is the same as the charge on the ion
Element Oxidation state of element Compound Oxidation States of
Elements
F 1 H
2

O H +1 O 2
O 2 CH
4

H +1 C 4…

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Each atom in a molecule or ion is assigned an oxidation state to show how much it is
oxidised or reduced.
An element is oxidised when its oxidation state increases An element is
reduced when its oxidation state decreases

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Redox reactions involve electron transfer. Redox reactions can be split into two
halfreactions: one producing electrons one accepting electrons
Example
When zinc is added to copper sulfate solution, a redox reaction takes place. The blue
colour of the solutions becomes paler, and copper metal deposits on the zinc. This is…

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Comments

Shantelle

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Hiya your notes are amazing! this link isn't working though is there anyway you could put it back up? x

Vongai

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Thanks your notes are really useful. Unfortunately some of your links have stopped working?

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