1: Name the type of chemical reaction that occurs when magnesium chloride solution (MgCl2) reacts with sodium carbonate solution (Na2CO3). 2: Explain why aluminum (Al) would react with copper chloride (CuCl2) but not with magnesium chloride (MgCl2).

Double displacement reaction

The position of the metals on the activity series

Explanation:

1.

The reaction between magnesium chloride solution and sodium carbonate solution is a double displacement or double replacement or metathesis reaction.

In this kind of reaction, there is an actual exchange of partners to form new compounds.

  The reaction expression is given as:

         MgCl₂     +    Na₂CO₃   →   MgCO₃  +   2NaCl

2.

The reason why Al would displace copper but not magnesium is that aluminum is lower than magnesium in the activity series.

 The position of metals on the activity series determines whether a metallic ion will be displaced by another from a solution or not.

On the activity series, higher the element, the more reactive it is and the more metallic ions it can displace.

Al is higher than copper and it will displace it.

Mg is higher than Al and Al cannot displace it.

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