Orthoboric acid when heated to red hot gives:, metaboric acid, pyroboric acid, boron and water, diboron trioxide

H 3 BO 3 → -H 2 O Δ/100 o C HBO 2 → -160 o C Δ H 4 B 2 O 7 → Red Hot > 250 o C Δ B 2 O 3 +2H 2 O

Orthoboric acid when heated to red hot gives:

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Orthoboric acid when heated to red hot gives:

Chemistryp Block Elements (Group 13 & 14)NEET

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Solution:

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The correct answer is: diboron trioxide

H_{3} {BO}_{3} \to_{{-H}_{2} O}^{{Δ/100}^{o} C} {HBO}_{2} \to_{{-160}^{o} C}^{Δ} H_{4} B_{2} O_{7} \to_{Red Hot > 250^{o} C}^{Δ} B_{2} O_{3} {+2H}_{2} O

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