N To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.190M sodium hydroxide (NaOH) solution to a 25.00 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 558. mg has been produced. The balanced chemical equation for the reaction is: Ni2+ (aq) + 2NaOH(aq) osof 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 the correct number of significant digits. Oprecipitation O acid-base Ⓒredox 0 0 0 0% 0⁰ 00 X 5

N To measure the amount of nickel in some industrial waste fluid, an analytical chemist adds 0.190M sodium hydroxide (NaOH) solution to a 25.00 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 558. mg has been produced. The balanced chemical equation for the reaction is: Ni2+ (aq) + 2NaOH(aq) osof 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 the correct number of significant digits. Oprecipitation O acid-base Ⓒredox 0 0 0 0% 0⁰ 00 X 5

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Pure platinum is too soft to be used in jewelry because it scratches easily. To increase the hardness so that it can be used in jewelry, platinum is combined with other metals to form an alloy. To determine the amount of platinum in an alloy, a 7.116 g sample of an alloy containing only platinum and cobalt is reacted with excess nitric acid to form 1.89 g of cobalt(II) nitrate. Calculate the mass percent of platinum in the alloy. mass percent: % Pt
For the following reaction, 0.557 moles of potassium hydroxide are mixed with 0.224 moles of phosphoric acid. potassium hydroxide(aq)+phosphoric acid(aq)= potassium phosphate(aq)+water(l) What is the formula for the limiting reagent? What is the maximum amount of potassium phosphate that can be produced?
6. Sodium sulfide reacts with hydrochloric acid to produce hydrogen sulfide and sodium chloride. How many grams of sodium sulfide are required for complete reaction with 15.0 mL of 0.250 M hydrochloric acid? The molar mass of sodium sulfide is 78.046 g/mol. (Hint: start by writing the balanced equation for the reaction.)
Iron(II) sulfide reacts with hydrochloric acid according to the reaction FeS(s)+2HCl(aq)→FeCl2(aq)+H2S(s) A reaction mixture initially contains 0.218 mol FeS and 0.636 mol HCl. Once the reaction has reached completion, what amount (in moles) of the excess reactant is left?
Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory to standardize strong base solutions. It has the unwieldy formula of KHC8H4O4. This is often written in shorthand notation as KHP. How many grams of KHP are needed to exactly neutralize 20.5 mL of a 0.381 M barium hydroxide solution? Mass = grams KHC, H4O4
A 0.9 g sample of a mixture of KCl and MgCl2 is treated with excess AgNO3(aq). If 2.37 grams of AgCl(s) are obtained, then what is the percentage by mass of KCl in the original mixture? Your answer must be accurate to two significant digits. Keep several extra digits in your calculations and round off only at the end. Do not include the percent sign (%) as part of your answer. Molar masses (in g mol−1): KCl, 74.55 MgCl2, 95.21 AgCl, 143.35
When a solution containing 27.2 g of lead (II) nitrate and a solution containing 35.4 g of potassium iodide are mixed, a yellow precipitate of lead (II) iodide is formed. If 13.6 g of the precipitate formed, what was the percent yield for the reaction? Note: you must write out and balance the equation first.
In a certain experiment two solutions are prepared and mixed. Solution 1 is prepared by dissolving 5.00 g of KNO3 and 5.00 g of BaCl2 in enough water to make a homogeneous solution. Solution 2 is prepared by dissolving 5.00 g of AgNO3 in enough water to make a homogeneous solution. A white color precipitate is formed upon mixing the two solutions. Identify the formula of the product and calculate the theoretical yield in grams.
1. A student was asked to react silver nitrate with sodium during a stoichiometry lab. The student react 12.3 g of silver nitrate with 7.83 g of sodium sulfate to produce the following products. Na2SO4(aq) + 2 AgNO3 (aq) -> Ag2SO4(s) + 2 NaNO3(aq) a) predict the mass of percipitate that the student should obtain.
33. You can -Text A 62.5 mL sample of a 0.118 M potassium sulfate solution is mixed with 37.0 mL of a 0.128 M lead(II) acetate solution and the following precipitation reaction occurs: The solid PbSO, is collected, dried, and found to have a mass of 1.00 g - Determine the limiting reactant, the theoretical yield, and the percent yield. ▸ Part A Part B Determine the theoretical yield. mass of PbSO, K₂SO, (aq) +Pb(C₂H₂O₂) (aq) +2KC₂H₂O₂ (aq) + PbSO,(s) ΗΘΕΙ ΑΣΦ Submit Previous Answers Bequest Answer nin * Incorrect; Try Again; 5 attempts remaining ? K