Colemanite + Na_(2)CO_(3)overset(" Fused")rarr (A)+(B)+CO_(2)underset("solution)((A))+CO_(2)rarr (B)+Na_(2)CO_(3)(B)+conc.HCl rarr NaCl+underset("Acid")((C )) underset("Acid")((C ))+H_(2)O rarr underset("Acid")((D))(D)overset("strong heating")rarr (E )(E )+CuSO_(4)overset("Heated")underset("in flame")rarr underset("Blue coloured compound")((F))Compound (B) is

Colemanite + Na_(2)CO_(3)overset(" Fused")rarr (A)+(B)+CO_(2)underset(

1.	Colemanite + Na_(2)CO_(3)overset(" Fused")rarr (A)+(B)+CO_(2)underset("solution)((A))+CO_(2)rarr (B)+Na_(2)CO_(3)(B)+conc.HCl rarr NaCl+underset("Acid")((C )) underset("Acid")((C ))+H_(2)O rarr underset("Acid")((D))(D)overset("strong heating")rarr (E )(E )+CuSO_(4)overset("Heated")underset("in flame")rarr underset("Blue coloured compound")((F))Compound (B) is
Answer» `Na_(2)B_(4)O_(7)` `NaBO_(2)` `Na_(3)BO_(3)` NaOH Solution :`B-Na_(2)B_(4)O_(7), C-H_(2)B_(4)O_(7)`