A Lewis acid 'X' reacts with LiAlH_4 in ether | vedclass

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Question

(B) The reaction of the Lewis acid $BF_3$ $(X)$ with $LiAlH_4$ in ether produces diborane,$B_2H_6$ $(Y)$,which is a highly toxic gas.$4BF_3 + 3LiAlH_4

Vedclass · Accepted Answer

Acidic oxide

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(B) The reaction of the Lewis acid $BF_3$ $(X)$ with $LiAlH_4$ in ether produces diborane,$B_2H_6$ $(Y)$,which is a highly toxic gas.$4BF_3 + 3LiAlH_4 \rightarrow 2B_2H_6 + 3LiF + 3AlF_3$When $B_2H_6$ $(Y)$ is heated with $NH_3$,it forms borazine $(B_3N_3H_6)$,which is known as inorganic benzene.$3B_2H_6 + 6NH_3 \rightarrow 2B_3N_3H_6 + 12H_2$When $B_2H_6$ $(Y)$ burns in oxygen,it produces $B_2O_3$ $(Z)$ and $H_2O$.$B_2H_6 + 3O_2 \rightarrow B_2O_3 + 3H_2O$$B_2O_3$ is a non-metallic oxide,and non-metallic oxides are acidic in nature. Therefore,'$Z$' is an acidic oxide.

$A$ Lewis acid '$X$' reacts with $LiAlH_4$ in ether medium to give a highly toxic gas,'$Y$'. '$Y$' when heated with $NH_3$ gives a compound known as inorganic benzene. '$Y$' burns in oxygen and gives $H_2O$ and '$Z$'. '$Z$' is

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