Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Consider the following sequence of reactions :
B 2 O 3 + CaF 2 + H 2 SO 4 
A
+ + LiAlH 4 
B
+ H 2 O
C
(g) + + H 2 O 
D
+ LiF + H 2 + Na 2 CO 3 
(E) + NaBO 2 + CO 2 (E) + NH 4 Cl 
(F) + B 2 O 3 + NaCl + H 2 O What is the empirical formula mass of compound (F) ?
(E) + NaBO 2 + CO 2 (E) + NH 4 Cl (F) + B 2 O 3 + NaCl + H 2 O What is the empirical formula mass of compound (F) ?
Text Solution
Verified by ExpertsThe correct answer is:
25
(25)
Sol. B 2 O 3 + CaF 2 + H 2 SO 4 
2BF 3 + 3CaSO 4 + 3H 2 O
4BF 3 + 3LiAlH 4 
2B 2 H 6 + 3AlF 3 + 3LiF
B 2 H 6 + H 2 O 
H 3 BO 3 + H 2
H 3 BO 3 + Na 2 CO 3 
Na 2 B 4 O 7 + NaBO 2 + CO 2
(E)
Na 2 B 4 O 7 + 2NH 4 Cl 
2(BN) x + B 2 O 3 + 2NaCl + 4H 2 O
(E) (F)
Empirical formula mass of BN = 10.8 + 14 = 24.8 ≈ 25
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