Problem: What volume of 0.100 M NaOH is required to precipitate all of the nickel(II) ions from 150.0 mL of a 0.249-M solution of Ni(NO3)2?

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FREE Expert Solution
  • Write the balanced equation to establish a relationship between the reactants via stoichiometry

  • Reaction will appear as a double displacement reaction where counterions are switched

  • Products will appear as NaNO3 (from Na+ and NO3-) and Ni(OH)2 (from Ni2+ and OH-)

  • Reaction will appear as:

Ni(NO3)2 (aq) + NaOH (aq) → Ni(OH)2 (aq) + NaNO3 (aq)

  • Balance NO3-

Ni(NO3)2 (aq) + NaOH (aq) → Ni(OH)2 (aq) + 2NaNO3 (aq) (2 on both sides)

  • Balance Na and OH-, balanced reaction will appear as:

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Problem Details

What volume of 0.100 M NaOH is required to precipitate all of the nickel(II) ions from 150.0 mL of a 0.249-M solution of Ni(NO3)2?