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the compound formed in the borax ead test of Cu+2 ion in oxidising flame is?

the compound formed in the borax ead test of Cu+2 ion in oxidising flame is?

Grade:10

1 Answers

Arun
25763 Points
2 years ago
Borax bead test is used to identify the present metal in given salt or mineral. The chemical formula of borax is Na2B4O7 .10H2O.
To perform the test a small loop is formed at the end of a platinum wire. The loop is cleaned with concentrated hydrochloric acid and dipped in powdered borax, then heated in the flame of a Bunsen burner until the borax melts, forming a bead. The bead is dipped into a tiny amount of the compound to be tested and is reheated in the flame.
Copper gives a blue-green colour under oxidising flame in borax bead test

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