Topic 8: Acids and Bases Flashcards
What is calcination?
A process that refers to the heating of materials to very high temperatures in air in order to bring about their thermal decomposition (in the case of limestone), the removal of water from a hydrated compound (for bauxite), or the removal of a volatile matter from minerals and ores.
Define neutralisation reaction.
A combination of an acid and base, ie. reaction involving H^(+) and OH^(-)
Define an acid
A proton donor.
Define a base.
A proton acceptor.
How is hydronium ion formed?
Hydronium ion, H3O^(+) is formed when a water molecule form a coordinate bond with a proton.
What is a conjugate acid-base pair?
When a conjugate acid and base differ from one another by a single proton.
What are amphiprotic species?
Substances that have the ability to act as either Bronsted-Lowry acid or Bronstead-Lowry base depending on the reaction in which they are taking part.
What colour is litmus for acid?
red
What colour is litmus for base?
blue
What colour is phenolphthalein for acid?
colourless
What colour is phenolphthalein for base?
pink
What colour is methyl orange for acid?
red
What colour is methyl orange for base?
yellow
acid + metal
salt + hydrogen
Define salt.
Compound composed of an anion and cation