U → Complete the following reactions
a. B(OH)3 +NH3
b.Na2B407+H2SO4+H20
c.B2H6+ 2NaOH+2H20
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Explanation:
Answer
The balanced equations are given below:
(i) 2BF
3
+6LiH
450K
B
2
H
6
+6LiF
(ii) B
2
H
6
+6H
2
O→2H
3
BO
3
(orthoboricacid)
(iii) 2NaH+B
2
H
6
→2Na[BH
4
](sodiumborohydride)
(iv) H
3
BO
3
→
△
HBO
2
(metaboricacid)+H
2
O
4HBO
2
Heat
−H
2
O
H
2
B
4
O
7
heat
2B
2
O
3
(borontrioxide)+H
2
O
(v) Al+3NaOH→Al(OH)
3
+3Na
3B
2
H
6
+6NH
3
→
heat
2B
3
N
3
H
6
+12H
2
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