Acids And Bases Flashcards
1
Q
What are alkalis
A
They are based that are soluble in water
2
Q
What do group 1 metals releases when they react with water
A
Hydroxides
3
Q
What are the problems with the arhenius model
A
- he only described them in terms of H+ and OH- ions
- he only describe acids and bases that are in solution
4
Q
What’s a strong acids or base
A
A substance that fully dissociates in water
5
Q
What’s a weak acid
A
A substance that partially dissociates in water
6
Q
What’s a weak base
A
A substance that reacts with water to form an equilibrium
7
Q
What happens to Kw when temperature increases
A
- temperature increases Kw increases because the the ionisation of water is endothermic so the conc of H+ and OH- increases
8
Q
When is a solution neutral
A
[H+] = [OH-]
9
Q
When is a solution neutral
A
[H+] = [OH-]
10
Q
What does a change in concentration to [H+] or [OH-] do and why
A
It doesn’t affect equilibrium because an increase in the concentration of one leads to the decrease in the concentration of the other leading to Kw being the same
