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Title: Best revision materiels for GCSE's
Description: Want to succeed in your GCSE's? Well here are the best revison notes for GCSE's
Description: Want to succeed in your GCSE's? Well here are the best revison notes for GCSE's
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Preparing a soluble salt
Core Practical
CC8c
...
Aim
To prepare a sample of pure, dry, hydrated copper sulfate crystals starting from copper oxide
...
Method
3
A
Pour about 20 cm of dilute sulfuric acid into a conical flask
...
C
Use the spatula to add a little copper oxide to the acid and stir or swirl
the contents of the flask
...
(This makes sure the copper oxide is in excess
...
F
Filter the mixture into a beaker and pour into an evaporating basin
...
Heat
the beaker, evaporating basin and contents using a Bunsen burner on a
blue flame
...
Then allow the
evaporating basin to cool
...
J
Observe the shape and colour of the copper sulfate crystals formed
...
Copying permitted for
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...
14
Preparing a soluble salt
Core Practical
CC8c
...
_____________________________________________________________________________________
_____________________________________________________________________________________
2
Describe the appearance of:
a
the sulfuric acid _____________________________________________________________________
__________________________________________________________________________________
b
the copper oxide ____________________________________________________________________
__________________________________________________________________________________
c
the solution at the end of the reaction
...
_____________________________________________________________________________________
4
State why you need to be sure excess copper oxide is added in step D
...
_____________________________________________________________________________________
7
What is dissolved in the solution that went through the filter paper?
_____________________________________________________________________________________
8
Explain why this is an example of a neutralisation reaction
...
Include the state symbols
...
Copying permitted for
purchasing institution only
...
15
Title: Best revision materiels for GCSE's
Description: Want to succeed in your GCSE's? Well here are the best revison notes for GCSE's
Description: Want to succeed in your GCSE's? Well here are the best revison notes for GCSE's