In the following reactions:
`B_(2) H_(6) + NH_(3) ("excess") overset(Delta )(rarr) X + H_(2)`
NaH + `BF_(3) overset(450K)(rarr) Y + NaF`
`B_(2)H_(6) + H_(2)O rarr Z + H_(2)`
X, Y and Z are respectively.

Options

A. `B_(2)H_(6), LiBH_(2), H_(3)BO_(3)`
B. `B_(3)N_(3)H_(6), B_(2)H_(6), H_(3)BO_(3)`
C. `(BN)_(n), LiBH_(4), HBO_(2)`
D. `B_(2)H_(6), B_(2)H_(6), HBO_(2)`

Answer

B

Explanation

`3B_(2)H_(6) + 6NH_(3) ("excess") underset("Heating")(rarr) underset("inorganic (x) benzene")(2B_(3) N_(3) H_(6)) + 12 H_(2) uarr`
` 6 NaH + 2 BF_(3) overset(450 K)(rarr ) underset(("Diborane") (Y) )(B_(2) H_(6)) + 6 NaF `
` B_(2) H_(6) + 6H_(2)O rarr underset((z) "Orthoboric acid (weak acid))( 2H_(3)BO_(3) ) + 6 H_(2) uarr `
Therefore,
X = `B_(3)N_(3)H_(6)`
Y = `B_(2)H_(6)`
Z = `H_(3) BO_(3)`
Hence, Option (b) is correct.