Qualitative Analysis - Result Question 52
55. Write the chemical reactions associated with the ‘borax bead test’ of cobalt (II) oxide.
(2000, 3M)
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Solution:
$ Na _2 B _4 O _7 \stackrel{\Delta}{\longrightarrow} 2 NaBO _2+B _2 O _3$
$\mathrm{CoO}+\mathrm{B}_2 \mathrm{O}_3 \xrightarrow{\Delta} \underset{\text { Blue }}{\mathrm{Co}\left(\mathrm{BO}_2\right)_2}$
BETA
