A salt having $B O_{3}^{3 -}$ on burning with alcohol and $c o n c . H_{2} S O_{4}$ gives _____ edge flame :

Green

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Yellow

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Red

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White

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Solution

The correct option is D Green
Option (A) is correct.
A salt having $B O_{3}^{3 -}$ on burning with alcohol and $c o n c . H_{2} S O_{4}$ gives green edge flame.
$2 N a_{3} B O_{3} + 3 H_{2} S O_{4} ⟶ 3 N a_{2} S O_{4} + 2 H_{3} B O_{3}$
$\begin{matrix} H_{3} B O_{3} & + & 3 C_{2} H_{5} O H & ⟶ & {(C_{2} H_{5})}_{3} B O_{3} & + & 3 H_{2} O . B u r n s w i t h g r e e n e d g e f l a m e \end{matrix}$

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Similar questions

H_{2} {S O}_{4}

C_{2} H_{5} O H

A

A

\begin{matrix} B O_{3}^{3 -} + c o n c . H_{2} S O_{4} + C H_{3} - C H_{2} - O H i g n i t e - -- \to & (A) G r e e n f l a m e \end{matrix}

c o n c . H_{2} S O_{4}

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