Acids n Stuff Flashcards
(14 cards)
1
Q
Ph is…
A
0 - 14
How acidic or alkaline a solution is
2
Q
Acids are ___ in the PH scale
A
lower
3
Q
How do we measure Ph?
A
- Indicator (chemical dyes) e.g universal indicator
- Ph Probe connected to Ph meter (Probe dips into solution which gives meter numerical reading)
4
Q
What do acids release in water?
A
Hydrogen ions which make the solution acidic
5
Q
What is an alkali?
A
Base that dissolves in water to form solution with Ph greater than 7
form OH- in water (hydroxide ions)
6
Q
What is a neutralisation reaction?
A
Acid + Base –> Salt + Water
7
Q
What is the formula for Sulfuric acid?
A
H2S04
8
Q
What is the formula for Nitric Acid?
A
HNO3
9
Q
What is the formula for Calcium Carbonate?
A
CaCo3
10
Q
Strong acids:
A
Ionise fully
11
Q
Examples of strong acids
A
Hydrochloric Acid
Nitric Acid
12
Q
Examples of weak acids
A
Citric Acid
Carbonic Acid
13
Q
Weak acids…
A
Don’t fully ionise
Reversible
14
Q
As you go down by one in the Ph scale…
A
Ph scale factor increases by x10
