Which of the following imparts a green colour | vedclass

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(A) The vapours of trialkyl borates,such as $B(OMe)_3$,burn with a green-edged flame. This reaction is a characteristic qualitative test for the prese

Vedclass · Accepted Answer

$B(OMe)_3$

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(A) The vapours of trialkyl borates,such as $B(OMe)_3$,burn with a green-edged flame. This reaction is a characteristic qualitative test for the presence of borates.The chemical reactions involved are:$2BO_3^{3-} + 3H_2SO_4 \rightarrow 2H_3BO_3 + 3SO_4^{2-}$$H_3BO_3 + 3CH_3OH \rightarrow B(OCH_3)_3 + 3H_2O$Since $B(OMe)_3$ is a trialkyl borate,it imparts a green colour to the flame.

Which of the following imparts a green colour to the burner flame?

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