Write out the ionic and net ionic equations of Ca(OH)2 + HNO3 ---> Ca(NO3)2 + H2O
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To write out the ionic and net ionic equations for the given reaction, let's break down the reaction into its constituent ions and determine the products formed.
First, we need to understand the formulas of the compounds involved:
- Calcium hydroxide: Ca(OH)2
- Nitric acid: HNO3
- Calcium nitrate: Ca(NO3)2
- Water: H2O
The reaction is a double displacement reaction, also known as a precipitation reaction, because a solid precipitate is formed when the two aqueous solutions are mixed.
Now, let's proceed to write the ionic equation. In an ionic equation, each compound is dissociated into its respective ions.
The ionic equation for the reaction is as follows:
Ca(OH)2(aq) + 2HNO3(aq) -> Ca(NO3)2(aq) + 2H2O(l)
In this equation, the Ca(OH)2 compound dissociates into Ca2+ and 2OH- ions, while HNO3 dissociates into H+ and NO3- ions. When they react, they exchange partners to form the products: Ca(NO3)2 and H2O.
Next, let's derive the net ionic equation from the ionic equation. In a net ionic equation, any spectator ions, which are ions that appear on both sides of the equation and do not directly participate in the reaction, are removed.
In this case, the spectator ions are Ca2+ and NO3-. They appear unchanged on both sides of the equation. Therefore, they can be removed:
2OH-(aq) + 2H+(aq) -> 2H2O(l)
This is the net ionic equation, which shows only the ions directly involved in the reaction. It represents the essential chemical changes occurring during the reaction.
Thus, the ionic equation is Ca(OH)2(aq) + 2HNO3(aq) -> Ca(NO3)2(aq) + 2H2O(l), and the net ionic equation is 2OH-(aq) + 2H+(aq) -> 2H2O(l).