Tag: study of diborane
Questions Related to study of diborane
Identify the statement that is not correct as far as structure of diborane is concerned.
In diborane:
When an inorganic compound (X) having 3c-2e as well as 2c-2e bonds reacts with ammonia gas at a certain temperature and gives a compound(Y) iso-structural with benzene.Compound (X) with ammonia at a high temperature, produces a hard substance (Z).Then:
An example of three centred bond is:
In the reaction, $2X+B _{2}H _{6}\rightarrow [BH _{2}(X) _{2}]^{+}BH _{4}^{-}$, the amine(s) X is (are) :
Select the incorrect statement
Diborane $(B _2H _6)$ on combustion give
Diborane is formed from the elements as shown in equation (1) $ 2B(s) +3H _2(g) \rightarrow B _2H _6(g) ......(1) $
The $ H^o$ for the reaction (1) is
Given that
| $ { H } _{ 2 }O(\ell )\rightarrow H _{ 2 }O(g) $ | $ \Delta { H } _{ 1 }^{ 0 }=44kJ $ |
|---|---|
| $ 2B(s)+\frac { 3 }{ 2 } { O } _{ 2 }(g)\rightarrow B _{ 2 }O _{ 3 }(s) $ | $ \Delta { H } _{ 2 }^{ 0 }=-1273kJ $ |
| $ B _{ 2 }H _{ 6 }(g)+3O _{ 2 }(g)\rightarrow B _{ 2 }O _{ 3 }+3H _{ 2 }O(g) $ | $ \Delta { H } _{ 3 }^{ 0 }=-2035kJ $ |
| $ H _{ 2 }(g)+\frac { 1 }{ 2 } O _{ 2 }(g)\rightarrow H _{ 2 }O(\ell ) $ | $ \Delta { H } _{ 4 }^{ 0 }=-286kJ $ |
$B _2H _6$ reacts with $O _2$ and $H _2O$ respectively to form:
Which is/are correct for $B _2H _6$ structure ?