Engineering
Chemistry
Detection of elements
Distinction tests
Flame Borax Bead and Other Test
Question
Which colour are obtained when Al2O3 and ZnO reacts separately with cobalt nitrate in charcoal cavity test respectively?
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Solution
CoO + Al2O3 —→ CoO·Al2O3
(Blue)
CoO + ZnO —→ CoO·ZnO
(Green)