Topic 8 - Acids and Bases Flashcards
1
Q
What is calcination?
A
- the heating of materials to a very high temperature in air
- in order to bring about their thermal decomposition, the removal of water from a hydrated compound, or the removal of volatile matter from minerals and ores
2
Q
What is a Bronsted-Lowry acid?
A
- proton donor
3
Q
What is a Bronsted-Lowry base?
A
- proton acceptor
4
Q
What is a strong acid?
A
- complete dissociation in water
5
Q
What is a strong base?
A
- partial dissociation in water
6
Q
What is an amphiprotic species?
A
- substances that have the ability to act as either a Bronsted-Lowry acid or Bronsted-Lowry base depending on the reaction in which they are taking part in
7
Q
What are the properties of acids?
A
- tastes sour
- ph < 7
- litmus is red
- phenolphtalein is colourless
- methly orange is red
8
Q
What are the properties of bases?
A
- tastes bitter
- ph > 7
- litmus is blue
- phenolphtalein is pink
- methly orange is yellow
9
Q
What does acid + metal equal?
A
- salt + hydrogen
10
Q
What does acid + base equal?
A
- salt + water
11
Q
What is an alkali?
A
- a soluble base
12
Q
What does acid + metal carbonate equal?
A
- salt + carbon dioxide + water
13
Q
What is a titration?
A
- a volumetric analysis technique that involves a reaction between a substance of unknown concentration with a standardised solution (the titrant)
14
Q
How can you calculate the pH?
A
- pH = -log(H+)
15
Q
What is acid deposition?
A
- process by which acid-forming pollutants are deposited on the Earth’s surface
