Question

What is the net ionic equation of the reaction of MgCl2 with NaOH ?Express you answer as a chemical equation including phases.

Answer 1

Answer:

$Mg_{(aq)}^{+2}+2OH_{(aq)}^-\operatorname{\rightarrow}Mg(OH)_{2(s)}.$

Explanation:

Remember that a net ionic equation is the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction.

First, let's state the balanced chemical equation:

$MgCl_2+2NaOH\rightarrow2NaCl+Mg(OH)_2.$

To do the net ionic equation, we just have to 'separate' each ion of each reactant and those ones in the product that don't bond to the OH, like this:

$(Mg^{2+}+2Cl^-)+(2Na^++2OH^-)\rightarrow(2Na^++2Cl^-)+Mg(OH)_2.$

The final step is to 'cancel' the ions that are repeated such as Cl (-) and Na (+), the net ionic equation would be with their respective phases:

$Mg_{(aq)}^{2+}+2OH_{(aq)}^-\rightarrow Mg(OH)_{2(s)}.$