Which reactions can be used to prepare dibora | vedclass

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(D) All three reactions are standard laboratory or industrial methods for the preparation of diborane $(B_2H_6)$:$I.$ The reaction of sodium borohydri

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$I, II, III$

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(D) All three reactions are standard laboratory or industrial methods for the preparation of diborane $(B_2H_6)$:$I.$ The reaction of sodium borohydride with boron trifluoride in ether is a common laboratory method: $3NaBH_4 + 4BF_3 	o 2B_2H_6 + 3NaBF_4$.$II.$ The reaction of sodium borohydride with iodine is another method: $2NaBH_4 + I_2 	o B_2H_6 + 2NaI + H_2$.$III.$ The reaction of boron trifluoride with sodium hydride at $450 \ K$ is an industrial method: $2BF_3 + 6NaH 	o B_2H_6 + 6NaF$.Therefore,all three reactions are correct.

Which reactions can be used to prepare diborane?
$I.$ $3NaBH_4 + 4BF_3 \xrightarrow{\text{ether}} 2B_2H_6 + 3NaBF_4$
$II.$ $2NaBH_4 + I_2 \to B_2H_6 + 2NaI + H_2$
$III.$ $2BF_3 + 6NaH \xrightarrow{450 \ K} B_2H_6 + 6NaF$

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Which reactions can be used to prepare diborane?$I.$ $3NaBH_4 + 4BF_3 \xrightarrow{\text{ether}} 2B_2H_6 + 3NaBF_4$$II.$ $2NaBH_4 + I_2 \to B_2H_6 + 2NaI + H_2$$III.$ $2BF_3 + 6NaH \xrightarrow{450 \ K} B_2H_6 + 6NaF$