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To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.2100M sodium hydroxide (NaOH) solution to a 24.0 g sample the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, he filters, washes and weighs it, and finds that 242. mg has been produced. The balanced chemical equation for the reaction is: Ni² (aq) + 2NaOH(aq) 1 What kind of reaction is this? Ni (OH)₂ (s) + 2 Na' (aq) 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. Be sure your answer has 3 significant digits. O precipitation O acid-base Ⓒredox 0 0 0 X Ú

To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.2100M sodium hydroxide (NaOH) solution to a 24.0 g sample the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, he filters, washes and weighs it, and finds that 242. mg has been produced. The balanced chemical equation for the reaction is: Ni² (aq) + 2NaOH(aq) 1 What kind of reaction is this? Ni (OH)₂ (s) + 2 Na' (aq) 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. Be sure your answer has 3 significant digits. O precipitation O acid-base Ⓒredox 0 0 0 X Ú

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
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To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.2100M sodium hydroxide (NaOH) solution to a 24.0 g sample of the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, he filters, washes and weighs it, and finds that 242. mg has been produced. The balanced chemical equation for the reaction is: Ni (aq) + 2NaOH(aq) 4 What kind of reaction is this? Ni (OH)₂ (s) + 2Na' (aq) 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. Be sure your answer has 3 significant digits. O precipitation acid-base Ⓒredox 0 0 0% 4 X 2 E 1 P
Transcribed Image Text:To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.2100M sodium hydroxide (NaOH) solution to a 24.0 g sample of the fluid and collects the solid nickel(II) hydroxide (Ni(OH)₂) product. When no more Ni(OH)₂ is produced, he filters, washes and weighs it, and finds that 242. mg has been produced. The balanced chemical equation for the reaction is: Ni (aq) + 2NaOH(aq) 4 What kind of reaction is this? Ni (OH)₂ (s) + 2Na' (aq) 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. Be sure your answer has 3 significant digits. O precipitation acid-base Ⓒredox 0 0 0% 4 X 2 E 1 P
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