Identify the compounds A, X and Z in the following reactions :
(i) A + 2HCL + 5H2O → 2NaCI + X
X → HBO2 → Z
A is Borax which reacts with HCl in the presence of water to give Orthoboric acid(X).
Orthoboric acid onstrongly heating(up to 370K) gives metaboric acid which on further heating (T>370K) yields Boron trioxide (Z).
1