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Kids Chemistry Lab HD Stock Images | Shutterstock

Presentation  Topic:- Charcoal Cavity Test

Presented By:- Tannu B.Sc.(Non-Medical) 3149820023

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It is a  dry test  which mainly aimed to detect metal cations.

C harcoal block is made up of  carbon  because carbon is a good  reducing agent.

MIXTURE OF SALT LIKE ZnSO4,CuSO4,PbSO4  + Na2CO3

PURPOSE OF ADDING Na2CO3 :- Na2CO3 is that metal carbonates decompose easily on heating to metal oxide.

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l.   CuSO4  +  Na2CO3                  CuCO3  +  Na2SO4                                                                                                    (adsorbed by charcoal) II.   CuCO3               CuO  +  CO2 lll.  CuO  +  C             Cu  +  CO

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CHARCOAL

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