Answer: the net ionic equation for the reaction of magnesium nitrate and sodium chromate is:
Mg2+ (aq) + CrO42- (aq) → MgCrO4 (s)
Explanation: The reactants, magnesium nitrate and sodium chromate, are both soluble in water. However, the product, magnesium chromate, is insoluble in water and will form a precipitate.
The spectator ions are the sodium ions (Na+) and the nitrate ions (NO3-). These ions are present in both the reactants and the products, and they do not participate in the reaction.
The net ionic equation shows only the ions that are involved in the reaction. It is a simplified representation of the overall reaction.
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