Testing for Oxidising and Reducing Agents Miss Priya

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Testing for Oxidising and Reducing Agents Miss Priya Bissram

Testing for Oxidising and Reducing Agents Miss Priya Bissram

BREATHALYZER TEST An oxidising agent is present in the tube. When alcohol is blown

BREATHALYZER TEST An oxidising agent is present in the tube. When alcohol is blown in from someones breath it gets oxidised. The oxidising agent changes colour from orange to green.

When a substance acts as an oxidising agent, the substance itself is reduced. When

When a substance acts as an oxidising agent, the substance itself is reduced. When a substance acts as a reducing agent, the substance itself is oxidised. Oxidising Agent Reducing Agent Remember!

Oxidising agents Zn(s) + Cu. SO 4(aq) → Zn SO 4(aq) + Cu(s) Cu.

Oxidising agents Zn(s) + Cu. SO 4(aq) → Zn SO 4(aq) + Cu(s) Cu. SO 4(aq) Cu (s) + 2 Ag. NO 3(aq) → Cu(NO 3)2 (aq) + Ag(s) 2 Ag. NO 3(aq)

Reducing agents Cu (s) + 2 Ag. NO 3(aq) → Cu(NO 3)2 (aq) +

Reducing agents Cu (s) + 2 Ag. NO 3(aq) → Cu(NO 3)2 (aq) + Ag(s) Cu (s) Zn(s) + Cu. SO 4(aq) → Zn SO 4(aq)+ Cu(s) Zn(s)

Using Oxidising agents Test with oxidising agents Add KMn. O 4 acidified with H

Using Oxidising agents Test with oxidising agents Add KMn. O 4 acidified with H 2 SO 4(aq) Add K 2 Cr 2 O 7(aq) acidified with H 2 SO 4(aq) Colour change for Zn(s) for Cu. SO 4(aq) for Ag. NO 3(aq)

Using Reducing Agents Test with Reducing agents Add aqueous KI Add aqueous Fe. Cl

Using Reducing Agents Test with Reducing agents Add aqueous KI Add aqueous Fe. Cl 3 Colour change with change Ag. NO 3(aq) with Cu. SO 4(aq) Colour change with Zn(s) Colour change with Cu (s)

Summary Oxidising and reducing agents can be used to test for each other. Various

Summary Oxidising and reducing agents can be used to test for each other. Various oxidising and reducing agents change colour when the test is affirmative.