b)
The student reacts some metals with different salt solutions.
Table 17.2 shows her results.
|
Magnesium |
Zinc |
Iron |
Copper |
Copper sulfate |
blue solution becomes colourless |
blue solution becomes colourless |
blue solution becomes green |
no reaction |
Iron sulfate |
green solution becomes colourless |
green solution becomes colourless |
no reaction |
no reaction |
Magnesium sulfate |
no reaction |
no reaction |
no reaction |
no reaction |
Zinc sulfate |
black coating on magnesium |
no reaction |
no reaction |
no reaction |
Table 17.2
i)
What colour is iron sulfate solution?
[1]
ii)
Write down the order of reactivity of the four metals copper, iron, magnesium and zinc.
Use Table 17.2 to help you.
........................................... most reactive
...........................................
...........................................
........................................... least reactive
[2]
iii)
Magnesium reacts with copper sulfate, CuSO4.
Magnesium sulfate, MgSO4, and copper are made.
Write the balanced symbol equation for this reaction.
[1]