Question

write the name of flame used in charcoal cavity test .why?​

Answer 1

Answer:

it's

Explanation:

Reducing flame is used in charcoal cavity test.

This test is used to receive the oxides of the 'unknown Salt'.

thank you

Answer 2

Answer : Sodium Carbonate is the flame used in charcoal cavity test .

Explanation:

*Charcoal Cavity Test :

1) This test is based on the fact that metallic carbonates when heated in a charcoal cavity decomposes to give corresponding oxides.

2) The oxides appear as coloured incrustation or residue in the

cavity.

3) In certain cases, the oxides formed partially undergo reduction to the metallic state producing metallic beads or scales.

4) The sodium carbonate used as a flame converts metal salts into their respective carbonates which then decomposes into metalic oxide .