Question

The following chemical reaction takes place in aqueous solution: MgBr2 (aq)+ 2KOH (aq) →Mg(OH)2(s)+ 2KBr(aq) Write the net ionic equation for this reaction.

Answer 1

Net ionic equation is: Mg∧+2 + 2OH∧-1 → Mg(OH)2 (s)

Step-by-step explanation:

Chemical equation:

MgBr2 + KOH → Mg(OH)2 + 2KBr

Balance chemical equation with physical states:

MgBr2(aq) + 2KOH(aq) → Mg(OH)2(s) + 2KBr(aq)

Ionic equation:

Mg∧+2 + 2Br∧-1 + 2K∧+1 + 2OH∧-1 → Mg(OH)2 (s) + 2K∧+1 +2Br∧-1

Net ionic equation:

Mg∧+2 + 2OH∧-1 → Mg(OH)2 (s)

2Br∧-1 and 2K∧+1 ions are spectator ions that's way these are not written in net ionic equation.

Spectator ions:

These are the ions that are present same on both side of chemical reaction and does not effect the equilibrium.