Chapter 13- Oxidation and Reduction

Redox reactions

Chemical reactions which involve oxidation of one substance and reduction of another.

Iodide ions

________ are oxidised to iodine by oxidising agent.2I- I2 + 2e-

Oxidation state

The charge an atom of an element would have if it existed as an ion in a compound.

Iodide ions

________ are oxidised to iodine which reacts with starch to give a blue colour.

NoneBashCSSCC GoHTMLObjective-CJavaJavaScriptJSONPerlPHPPowershellPythonRubyRustSQLTypeScriptYAMLCopy Pb2+ + 2e

→Pb

NoneBashCSSCC GoHTMLObjective-CJavaJavaScriptJSONPerlPHPPowershellPythonRubyRustSQLTypeScriptYAMLCopy 2Br

→ Br2 + 2e-

Oxidising agent

A substance that causes another substance to be oxidised, and is reduced itself in the process.

Reducing agent

A substance that causes another substance to be reduced, and is oxidised in that process.

For gases

Place a piece of filter paper soaked with acidified potassium manganate (VII), KMnO4, at the mouth of the test tube

For solutions

Add acidified potassium manganate (VII) to unknown solution

Potassium Manganate VII

A chemical used to identify reducing agents by change in colour.

Potassium Iodide

A chemical used to identify oxidising agents through change in colour.