Identify the compounds A, X and Z in the following reactions.

A+2HCl+5H2O2NaCl+X

X370 KHBO2370 KZ


(i) Na2B4O7Borox (A)+2HCl+5H2O2NaCl+4H3BO3Orthobodirc acid (X)
(ii) H3BO3 370 KHBO2Metaboric acid+H2O
(iii) 4HBO2H2O 370 K[H2B4O7]TetraboricacidHeatRed3B2O2+H2OBoron trioxide (Z)