Amphorteric Alumina Flashcards
1
Q
Alumina
A
Al2 O3
2
Q
Define acid
A
dissociates in water to form H+ ions
3
Q
Base?
A
Reacts with acid to form salt + water
4
Q
Alkali?
A
a base that dissolves in water, OH-
5
Q
Amphoteric?
A
Acts as both base and acid
6
Q
What is alumina oxide?
A
- Al2O3
- chemically inert except in hot base/acid
- react with base and acid
7
Q
alumina and base
A
AL2O3 + 6NAOH + 3H20 > 2NA3AL(OH)4
8
Q
alumina and acid
A
AL2O3 + 6HCL > 2ACL3 + 3H2O
9
Q
uses of alumina ?
A
- paint, sunscreen, filler
- stationary phase in chromatography
- effective desiccant
