Question
Question: When ortho boric acid (H3BO3) is heated the residue left is :...
When ortho boric acid (H3BO3) is heated the residue left is :
A
Boron
B
Metaboric acid
C
Boric anhydride
D
Borax
Answer
Boric anhydride
Explanation
Solution
2H3BO3→Δ(redhot)B2O3 + 3H2O