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Identify the compound A, X and Z in the ...

Identify the compound A, X and Z in the following reactions:
(i) `A+2HCl+5H_(2)Orarr2NaCl+x` (ii) `Xunderset(370k)overset(Delta)rarrHBO_(2)underset(gt370k)overset(Delta)rarrZ`

Text Solution

Verified by Experts

(i) `underset("Borax (A)")(Na_(2)B_(4)O_(7)) + 2HCl + 5H_(2)O rarr 2NaCl + underset(" Boric acid (X) ")(4H_(3)BO_(3))`
(ii) `underset((X)) overset(Delta, 370 K)rarr underset(" Metaboric acid ")(HBO_(2)) + H_(2)O`
`4HBO_(2)underset(-H_(2)O)overset(Delta, gt 370 K)rarr underset(" Tetraboric acid ")([H_(2)B_(4)O_(7)]) overset(" Red heat ")rarr underset(" Boron trioxide (Z) ")(2B_(2)O_(3)) + H_(2)O`
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