To measure the amount of nickel In some industrial waste fluid, an analytical chemist adds 0.3600M sodium hydroxide (NaOH)

Question

To measure the amount of nickel In some industrial waste fluid, an analytical chemist adds 0.3600M sodium hydroxide (NaOH) solution to a 22.0 g sample of the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, she filters, washes and weighs It, and finds that 379. mg has been produced.
The balanced chemical equation for the reaction is:
Ni²+ (aq) + 2NaOH(aq) → Ni(OH)₂(s) + 2 Na* (aq)
What kind of reaction is this?
If you said this was a precipitation reaction, enter the chemical formula of the precipitate.
If you said this was an acid-base reaction, enter the chemical formula of the reactant that is acting as the base.
If you said this was a redox reaction, enter the chemical symbol of the element that is oxidized.
Calculate the mass percent of Ni in the sample.

Kunduz · Accepted Answer

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