Question

To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.200 M sodium hydroxide (NaOH) solution to a 20.00 g sample of the fiuid and collects the solid nickel (II) hydroxide (Ni(OH) product. When no more Ni(OH), is produced, she filters, washes and weighs it, and finds that 0.288 g has been produced. The balanced chemical equation for the reaction is: Ni (aq) +2NaOH(aq) Ni(OH),)+2Na (aq) 4 Oprecipitation acid-base What kind of reaction is this? Oredox If you said this was a precipitation reaction, enter the chemical formula of the precipitate. If you said this was an acid-tbase 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. O Calculate the mass percent of Ni in the sample. Be sure your answer has the correct number of significant digits % x

Answer 1

plz thumbs up if found useful

Page No. Date | This is lovilitation Reaction. kulitate famed -> Nilonga In the Reaction all the Nickel futent in fluid is Conversed to product ie Nicou. Now, calculate how much of miis Rresent in Nicon formed Nilong molecules mass 99.7089 mi 58.693 g 192.78 3. f. Nicoh, have h 58.6978 rii 0.288 i 1 1 - 58.193 yo. 289 IL 92-708 0.182 g Ni so 0.1898 of dit was in 2.2 Noo Sot of ni= 0.182 go = 0.91 Scanned with CamScanner