The equation Zn(NO3)2 + 2NaOH -> Zn(OH)2 + 2NaNO3.

  1. Detailed information about the equation Zn(NO3)2 + 2NaOH -> Zn(OH)2 + 2NaNO3:

    • This is an ion exchange reaction between zinc nitrate Zn(NO3)2 and sodium hydroxide NaOH to form zinc hydroxide Zn(OH)2 and sodium nitrate NaNO3.
    • In this reaction, zinc Zn transitions from the Zn2+ ion state to the atomic state in Zn(OH)2, while sodium Na transitions from the atomic state in NaOH to the ion state Na+ in NaNO3.

  2. Reaction conditions:

    • A sufficient amount of reactants is needed in a molar ratio: 1 mol of Zn(NO3)2 reacts with 2 mol of NaOH.
    • The reaction can occur at room temperature.

  3. Reaction process:

    • Initially, when zinc nitrate Zn(NO3)2 comes into contact with sodium hydroxide NaOH, the nitrate ion NO3- in Zn(NO3)2 and the hydroxide ion OH- in NaOH will exchange with each other, forming zinc hydroxide Zn(OH)2 and sodium nitrate NaNO3.

  4. Observed phenomenon:

    • When gradually adding sodium hydroxide NaOH to the solution of zinc nitrate Zn(NO3)2, a white precipitate of zinc hydroxide Zn(OH)2 will appear.

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