Question
Question: A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form 'A' an...
A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form 'A' and HCl .' A' is mixed with NH3 and heated to 200∘C to form 'B’. The formula of 'B' is:
A. H3BO3
B. B2O3
C. B2H6
D. B3N3H6
Solution
In the first reaction, you can replace all boron-chlorine bonds with boron-hydrogen bonds. In the second reaction, two reagent molecules will add to form a single product which has structure similar to benzene.
Complete answer:
A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form 'A' and HCl .
Write the balanced chemical equation for the above process as shown below:
In the above reaction all the boron-chlorine bonds are replaced with boron-hydrogen bonds. New hydrogen-chlorine bonds are formed.
Thus, the compound ‘A’ is diborane with chemical formula B2H6 .
' A' is mixed with NH3 and heated to 200∘C to form 'B’.
Write the balanced chemical equation for the above process as shown below:
The compound ‘B’ is B3N3H6
**Hence, the correct option is the option D.
Note:**
The chemical formula B3N3H6represents the compound borazine which is commonly called inorganic benzene. It contains 12 sigma bonds and 3 pi bonds, similar to those present in benzene. Alternate three BH units and three NH units are present.