Here's the balanced chemical equation for the reaction of copper(II) nitrate with sodium hydroxide:

Cu(NO₃)₂ (aq) + 2NaOH (aq) → Cu(OH)₂ (s) + 2NaNO₃ (aq)

Here's a breakdown of the equation:

* Cu(NO₃)₂ (aq): Copper(II) nitrate in an aqueous solution (aq)

* 2NaOH (aq): Sodium hydroxide in an aqueous solution (aq)

* Cu(OH)₂ (s): Copper(II) hydroxide, a precipitate that forms as a solid (s)

* 2NaNO₃ (aq): Sodium nitrate in an aqueous solution (aq)

Explanation:

* This reaction is a double displacement reaction, where the positive and negative ions switch partners.

* Copper(II) ions (Cu²⁺) from copper(II) nitrate combine with hydroxide ions (OH⁻) from sodium hydroxide to form copper(II) hydroxide.

* Sodium ions (Na⁺) from sodium hydroxide combine with nitrate ions (NO₃⁻) from copper(II) nitrate to form sodium nitrate.

* Copper(II) hydroxide is insoluble in water, so it precipitates out of the solution as a solid.

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