A displacement reaction can also be used to decide the order of reactivity of two metals. State two observations made when an excess of magnesium powder is added to an aqueous solution of copper(II) sulfate.
Answers
Answer:
Displacement reactions involve a metal and a compound of a different metal. In a displacement reaction:
a more reactive metal will displace a less reactive metal from its compounds
Displacement reactions are easily seen when a salt of the less reactive metal is in the solution. During the reaction:
the more reactive metal gradually disappears as it forms a solution
the less reactive metal coats the surface of the more reactive metal
For example, magnesium is more reactive than copper. When a piece of magnesium is dipped into blue copper sulfate solution:
the blue colour fades as colourless magnesium sulfate solution forms
brown copper coats the surface of the magnesium
Explanation:
Here are the equations for the reaction:
magnesium + copper sulfate → magnesium sulfate + copper
Mg + CuSO4 → MgSO4 + Cu
No reaction is seen if you do things the other way round – in other words, if you put copper powder into magnesium sulfate solution. This is because copper is not reactive enough to displace magnesium from magnesium sulfate.
Answer: bubbles of gas and pale blue solution
Explanation:
I believe that this is what will happen because the reaction will be blue and become paler, and also it could be an exothermic reaction