Question

what happens when Boron is added to hno3

Answer 1

1. Concentrated nitric acid is a very strong oxidizing agent. It oxidizes non-metals like B, C and S to their oxides getting itself reduced to one of its oxides(NO2, NO).
2. If the oxide of the non-metal is water soluble the corresponding acid is formed.

• B+HNO3 + H20 — -H3BO3+NO

Answer 2

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Reaction of boron (HNO3):

Boron usually doesn't react with acids and alkalis only in highly divided state. when it reacts with HNO3,it gives boric acid. this gives high temperature.

B + 3HNO3 -------> H3BO3 + 3NO2.

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