Complete the following chemical equations:
$4BF_{3} + 3LiAlH_{4} \to 2B_{2}H_{6} (X) + 3LiF + 3AlF_{3}$
$B_{2}H_{6} (X) + 6H_{2}O \to 2H_{3}BO_{3} (Y) + 6H_{2}$
$B_{2}H_{6} (X) + 3O_{2} \xrightarrow{\Delta} B_{2}O_{3} + 3H_{2}O$
$4BF_{3} + 3LiAlH_{4} \to 2B_{2}H_{6} (X) + 3LiF + 3AlF_{3}$
$B_{2}H_{6} (X) + 6H_{2}O \to 2H_{3}BO_{3} (Y) + 6H_{2}$
$B_{2}H_{6} (X) + 3O_{2} \xrightarrow{\Delta} B_{2}O_{3} + 3H_{2}O$
The given reactions represent the synthesis and chemical properties of diborane $(B_{2}H_{6})$.
$(i)$ The reaction of boron trifluoride with lithium aluminium hydride produces diborane: $4BF_{3} + 3LiAlH_{4} \to 2B_{2}H_{6} (X) + 3LiF + 3AlF_{3}$.
$(ii)$ Diborane reacts with water to form orthoboric acid: $B_{2}H_{6} + 6H_{2}O \to 2H_{3}BO_{3} (Y) + 6H_{2}$.
$(iii)$ Diborane undergoes combustion in oxygen to form boron trioxide and water: $B_{2}H_{6} + 3O_{2} \xrightarrow{\Delta} B_{2}O_{3} + 3H_{2}O$.
Therefore,$X = B_{2}H_{6}$ and $Y = H_{3}BO_{3}$.
$(i)$ The reaction of boron trifluoride with lithium aluminium hydride produces diborane: $4BF_{3} + 3LiAlH_{4} \to 2B_{2}H_{6} (X) + 3LiF + 3AlF_{3}$.
$(ii)$ Diborane reacts with water to form orthoboric acid: $B_{2}H_{6} + 6H_{2}O \to 2H_{3}BO_{3} (Y) + 6H_{2}$.
$(iii)$ Diborane undergoes combustion in oxygen to form boron trioxide and water: $B_{2}H_{6} + 3O_{2} \xrightarrow{\Delta} B_{2}O_{3} + 3H_{2}O$.
Therefore,$X = B_{2}H_{6}$ and $Y = H_{3}BO_{3}$.
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Similar Questions
Identify the correct statements from the following:
$a$) Borax gives blue coloured $Co(BO_2)_2$ when heated with $Co^{2+}$ salt.
$b$) The correct formula of Borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.
$c$) Trihalides of boron are Lewis bases.
$a$) Borax gives blue coloured $Co(BO_2)_2$ when heated with $Co^{2+}$ salt.
$b$) The correct formula of Borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.
$c$) Trihalides of boron are Lewis bases.
On the basis of reactions given below identify $X, Y, Z$.
$Boron \xleftarrow{Mg \, or \, Fe} X \xleftarrow{\Delta} B(OH)_3 + \text{Gas-}Z$
$B(OH)_3 \xleftarrow{H_2O} Y \xrightarrow{2NH_3/\Delta} \text{Inorganic benzene}$
$Boron \xleftarrow{Mg \, or \, Fe} X \xleftarrow{\Delta} B(OH)_3 + \text{Gas-}Z$
$B(OH)_3 \xleftarrow{H_2O} Y \xrightarrow{2NH_3/\Delta} \text{Inorganic benzene}$
Match the following compounds in List-$I$ with their properties/names in List-$II$.
List-$I$ (Compound) List-$II$ (Property/Name/Structure) $A$. $H_3BO_3$ $1$. Dimeric form $B$. $AlCl_3$ $2$. Back bonding $C$. $B_3N_3H_6$ $3$. Hydrogen bonding $D$. $BF_3$ $4$. Inorganic benzene
| List-$I$ (Compound) | List-$II$ (Property/Name/Structure) |
|---|---|
| $A$. $H_3BO_3$ | $1$. Dimeric form |
| $B$. $AlCl_3$ | $2$. Back bonding |
| $C$. $B_3N_3H_6$ | $3$. Hydrogen bonding |
| $D$. $BF_3$ | $4$. Inorganic benzene |
Select the incorrect statement:
$a$. $PCl_5$ forms a weak monobasic acid during hydrolysis.
$b$. In $B_3N_3H_6$,nucleophilic attack occurs on the $B$ atom.
$c$. $Al_2Cl_6$ is a polar and planar molecule.
$d$. In $AlF_3$,the hybridization of $Al$ is $sp^2$.
$a$. $PCl_5$ forms a weak monobasic acid during hydrolysis.
$b$. In $B_3N_3H_6$,nucleophilic attack occurs on the $B$ atom.
$c$. $Al_2Cl_6$ is a polar and planar molecule.
$d$. In $AlF_3$,the hybridization of $Al$ is $sp^2$.
Difficult
View SolutionWhich one of the following elements is unable to form $MF_{6}^{3-}$ ion?
MediumNEET 2018
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