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प्रश्न
Explain what happens when boric acid is heated.
उत्तर
On heating orthoboric acid (H3BO3) at 370 K or above, it changes to metaboric acid (HBO2). On further heating, this yields boric oxide B2O3.
\[\ce{H3BO3 ->[\Delta][370 K] \underset{Metaboric acid}{HBO2} ->[\Delta][red hot] \underset{\text{Boric oxide}}{B2O3}}\]
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संबंधित प्रश्न
A certain salt X, gives the following results.
- Its aqueous solution is alkaline to litmus.
- It swells up to a glassy material Y on strong heating.
- When conc. H2SO4 is added to a hot solution of X, white crystal of an acid Z separates out.
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In diborane ______.
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