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NCERT Class XI Chemistry The p-Block Elements Solutions

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Question : 6 of 38
Marks: +1, -0
Explain what happens when boric acid is heated.
Solution:  
On heating orthoboric acid above 370 K, it forms metaboric acid, HBO2\mathrm{HBO}_2 which on further heating yields boric oxide, B2O3\mathrm{B}_2\mathrm{O}_3.
H3BO3→ΔHBO2→ΔB2O3\mathrm{H}_3\mathrm{BO}_3\xrightarrow[]{\Delta}\mathrm{HBO}_2\xrightarrow[]{\Delta}\mathrm{B}_2\mathrm{O}_3
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