The equation 4HNO3 + Cu(OH)2 -> 2NO2 + 2H2O + Cu(NO3)2

  1. Detailed information about the chemical equation:

    • The above chemical equation describes the reaction process between nitric acid (HNO3) and copper (II) hydroxide (Cu(OH)2) to produce nitrogen dioxide (NO2), water (H2O), and copper (II) nitrate (Cu(NO3)2).
    • From the equation, we see that 4 moles of nitric acid react with 1 mole of copper (II) hydroxide to produce 2 moles of nitrogen dioxide, 2 moles of water, and 1 mole of copper (II) nitrate.

  2. Reaction conditions:

    • This reaction usually takes place at room temperature.

  3. Reaction process:

    • First, nitric acid will react with copper (II) hydroxide, forming copper (II) nitrate, nitrogen dioxide, and water.

  4. Phenomena occurring:

    • When the reaction takes place, we will see a color change in the solution from the blue of Cu(OH)2 to a lighter blue of Cu(NO3)2.
    • At the same time, brown nitrogen dioxide gas will escape from the solution.

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