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))Colemanite 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))Colemanite is
Answer» `Ca_(2)B_(2)O_(11)` `Ca_(2)B_(6)O_(11)` `Ca_(4)B_(4)O_(11)` `Ca_(6)B_(6)O_(11)` SOLUTION :COLEMANITE `- Ca_(2)B_(6)O_(11) , A - NaBO_(2)`