1. Compound (A) is borax, which is used in the manufacture of opticals.
2. Borax (A) on heating to give borax glass (B). Borax glass on further heating to give sodium metaborate (C).
3. Borax (A) reacts with hydrochloride acid to give boric acid.
A |
Borax |
Na2B4O7.10H2O |
B |
Borax glass |
Na2B4O7 |
C |
Sodium glass |
Na2BO2 |
D |
Boric acid |
H3BO3 |