A student adds lead and silver to two diiferent test tubes containing an equal amount of copper sulphate solution.The student observes that the colour of the solution in the test tube with lead changes.What explains the change in the colour of the solution?
A displacement reation takes place as lead replces copper from the solution.
A combination reaction takes place as lead combines with sulphate in the solution.
Decomposition reaction takes place as copper dissociates from sulphate in the solution.
A double displacement reation takes place as copper dissociates from sulphate and lead combines with sulphate in the solution.
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