When borax is heated with CoO on a platinum l | vedclass

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Question

(B) The borax bead test involves the following reactions:$Na_{2}B_{4}O_{7} \cdot 10 H_{2}O \xrightarrow{\Delta} Na_{2}B_{4}O_{7} + 10 H_{2}O$$Na_{2}B_

Vedclass · Accepted Answer

$Co(BO_{2})_{2}$

Vedclass · Answer

(B) The borax bead test involves the following reactions:$Na_{2}B_{4}O_{7} \cdot 10 H_{2}O \xrightarrow{\Delta} Na_{2}B_{4}O_{7} + 10 H_{2}O$$Na_{2}B_{4}O_{7} \xrightarrow{\Delta} 2 NaBO_{2} + B_{2}O_{3}$$B_{2}O_{3} + CoO ightarrow Co(BO_{2})_{2} 	ext{ (cobalt (II) metaborate)}$The blue coloured bead is due to the formation of cobalt $(II)$ metaborate,$Co(BO_{2})_{2}$.

When borax is heated with $CoO$ on a platinum loop,the blue coloured bead formed is largely due to

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