1.

In the reaction2X+B_(2)H_(6)rarr [BH_(2)X_(2)]^(+)[BH_(4)]^(-) the amines (s) X is/are

Answer»

`NH_3`
`CH_3NH_2`
`(CH_3)_2NH`
`(CH_3)_3N`

Solution :X is `NH_3`
`2NH_(3)+B_(2)H_(6)rarr[BH_(2)(NH_3)_2]^(+)[BH_(4)]^(-)`
`CH_(3)NH_3:2CH_(3)NH_(2)+B_(2)H_(6)rarr [BH_(2)(CH_3NH_2)_(2)]^(+)[BH_4]^(-)`
`(CH_3)_2NH:2(CH_3)_(2)NH+B_(2)H_(6)rarr[BH_(2)(CH_3NH_2)_(2)]^(+)[BH_4]^(-)`
with `(CH_3)_3N,B_(2)H_6` forms an adduct
`(CH_3)_3N+B_(2)H_(6)rarr2[(CH_3)_3N rarrBH_(3)]`


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