Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

NTA Abhyas 2020 · Chemistry · p Block Elements (Group 13 & 14)

The intermediate product (X) formed in the following reaction is B...

The intermediate product (X) formed in the following reaction is

B2H6+6NH3→3X→heat2B3N3H6+12H2{B}_{2}{H}_{6} + 6N{H}_{3} \to 3X\overset{heat}{\to}2{B}_{3}{N}_{3}{H}_{6} + 12{H}_{2}

Options

  1. A[ BH (NH3)3]+[BH4]−{\left[\text{ BH }{\left(N{H}_{3}\right)}_{3}\right]}^{+}{\left[B{H}_{4}\right]}^{-}
  2. B[BH2(NH3)4]+[BH4]−{\left[B{H}_{2}{\left(N{H}_{3}\right)}_{4}\right]}^{+}{\left[B{H}_{4}\right]}^{-}
  3. C[ BH (NH3)4]+[BH4]−{\left[\text{ BH }{\left(N{H}_{3}\right)}_{4}\right]}^{+}{\left[B{H}_{4}\right]}^{-}
  4. D[BH2(NH3)2]+[BH4]−{\left[B{H}_{2}{\left(N{H}_{3}\right)}_{2}\right]}^{+}{\left[B{H}_{4}\right]}^{-}

Correct answer

D. [BH2(NH3)2]+[BH4]−{\left[B{H}_{2}{\left(N{H}_{3}\right)}_{2}\right]}^{+}{\left[B{H}_{4}\right]}^{-}

Step-by-step solution

3B2H6Diborane+6NH3→lowtemp.3[BH2(NH3)2]+[BH4]−(X)→473KΔ2B3N3H6Borazine+12H2\mathop{3{B}_{2}{H}_{6}}_{Diborane} + 6N{H}_{3}\overset{low\text{temp.}}{\to}\mathop{3{\left[B{H}_{2}{\left(N{H}_{3}\right)}_{2}\right]}^{+}{\left[B{H}_{4}\right]}^{-}}_{( X )}\overset{473K\Delta}{\to}\mathop{2{B}_{3}{N}_{3}{H}_{6}}_{Borazine} + 12{H}_{2}
Practice p Block Elements (Group 13 & 14) on Quantrex Academy →

More from p Block Elements (Group 13 & 14)

Given below are two statements : Statement I: Aluminium upon reaction with NaOH forms… JEE Main 2026Consider the following reactions Na_ 2 ~B_ 4 O_ 7 Δ 2 X+ Y CuSO_ 4 + Y Non-Luminous flame… JEE Main 2026It is noticed that Pb^ 2+ is more stable than Pb^ 4+ but Sn^ 2+ is less stable than Sn^… JEE Main 2026The correct statements from the following are : A. Ionic radii of trivalent cations of… JEE Main 2026Given below are two statements : Statement I : Elements ' X ' and ' Y ' are the most and… JEE Main 2026Consider the following reactions. PbCl_ 2 +K_ 2 CrO_ 4 arrow ~A+2 KCl (Hot solution)… JEE Main 2026Given below are two statements : Statement I : The number of pairs among [SiO_ 2 , CO_ 2… JEE Main 2026The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715… JEE Main 2025 Full p Block Elements (Group 13 & 14) list All NTA Abhyas JEE Main PYQs