Question

Identify X and Y in the following reaction ;
$BC{l_3} + N{H_4}Cl{ \xrightarrow {{C_6}{H_5}Cl}}X{ \xrightarrow{NaB{H_4}}}Y$
A. $X = NaB{O_2},Y = {B_2}{O_3}$
B. $X = N{a_2}{B_4}{O_7},Y = {H_3}B{O_3}$
C. $X = BN,Y = {\left[ {N{H_4}} \right]^ + }{\left[ {BC{l_4}} \right]^ - }$
D. $X = {B_3}{N_3}{H_3}C{l_3},Y = {B_3}{N_3}{H_6}$

Answer 1

Hint: Sodium borohydride also known as sodium tetrahydridoborate is an organic compound with the formula $\,NaB{H_{4\,}}\,$ . It is a reducing agent that finds application in laboratory and industry. Bayer process is the method for production of sodium borohydride. To get the solution of the above solution one should have knowledge of the chemical properties of group 13 which are boron , aluminium , gallium , indium , thallium .

Complete step by step answer:
group 13 element also referred to as the trials . boron is the first element of this group and classified as typically non metal . aluminium occurs widely on earth and it is the third most abundant element in earth's crust . borons is also used in industrial application . expanded form of boron and its derivative is used in ceramics . The compound called borax is used in bleaches for clothes .
Now coming to the solution part ;ammonium chloride in reaction with boron chloride at temperature of .\[\,\,140 - 150\,\,\] . $^0C$ in presence of catalyst ${C_6}{H_5}Cl$ produces trichloride borazine.
Reaction can be written as - $3BC{l_3} + 3N{H_4}Cl \to {B_3}{N_3}{H_3}C{l_3} + 9HCl$
The reduction of trichloridoborazine with sodium borohydride produces borazine .
Reaction can be written as - $2{B_3}{N_3}{H_3}C{l_3} + 6Na\left[ {B{H_4}} \right] \to 2{B_3}{N_3}{H_6} + 6NaCl + 3{B_2}{H_6}$
Hence , $
 X = {B_3}{N_3}{H_3}C{l_3}$
$Y = {B_3}{N_3}{H_6}
$

So, the correct answer is Option D.

Note: boron is a trace element in humans and is essential for some plants . Lack of boron can lead to student plant growth and harm by inhibiting growth .The compound y formed is called borazine which has some similar properties as benzene . It is a polar inorganic compound and this is also known as inorganic benzene . The compound is isoelectronic and isostructural with benzene . borazine is a colorless liquid . borazine is kinetically and thermodynamically more stable than benzene .