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23 March, 03:35

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.

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  1. 23 March, 07:34
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    Net ionic equation is: Mg∧+2 + 2OH∧-1 → Mg (OH) 2 (s)

    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.
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