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in p-Block Elements – I by (34.6k points)
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Complete the reaction.

(i)  H3BO3 + 373k  ⟶ A + H2O

(ii)  A + 413k ⟶ B + H2O

(iii) B + Red hot ⟶ C + H2O

1 Answer

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Best answer

Boric acid when heated at 373 K gives metaboric acid (A) and A heated at 413 K it gives tetraboric acid (B). B heated at red hot it gives boric anhydride (C)

A Metaboric acid HBO2
B Tetraboric acid H2B4O7
C Boric anhydride B2O3

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