Date post: | 14-May-2015 |
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Education |
Upload: | andrew-joseph |
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REACTIONS WITH ACIDS
Learning Goals:
To understand what neutralisation is
To understand reactions between acids and metals
To understand reactions between acids and carbonates
REACTIONS WITH ACIDS
H+
Cl
Cl
H+
H+
Cl
H+
Cl
Cl
H+
H+
Cl
Na
Na
Na
OH+
OH+
OH+
Sodium Hydroxide
HydrochloricAcid
MIX HCl AND NaOH?
H+
Cl
Cl
H+
H+
Cl
Na
NaN
aOH-
OH-
OH-
H+
Cl
Cl
H+
H+
Cl
Na
NaN
aOH-
OH-
OH-
HCl AND NaOH REACT
WHAT HAVE WE PRODUCED?
Cl
Na
H+
OH-
SALT + WATER
NEUTRALISATION
ACID + BASE = SALT + WATER
Concentration of acid (M) Volume of gas produced (ml)
0.1 5
0.2 10
1 50
3 100
4 200
DRAW A GRAPH
An acid reacts with a metal to produce a salt, water and carbon dioxide.An experiment was carried out testing 5 different concentrations of acid, to see how gas each gives off when reacting with a metal.
Draw a graph of these results
In your garage, you discover 3 identical bottles with no labels. Each contains a clear liquid. You know that one is an acid used to clean the pool, one is a base used to clean clothes, and the other is just water. But they all look the same!
You’ve heard that some acids and bases give off dangerous fumes so having a sniff is a bad idea.
You remember that in year 9 science, you used a plant to tell which samples were bases, which were acids and which were neutral. You look out into the garden and notice that you have this plant growing there.
Write down the steps you would take to tell which is the acid, which is the base and which is the water
IDENTIFYING THE LIQUID