Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 4, Problem 129IL
A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8H6Cl2O3. A 1.236-g sample of the herbicide was decomposed to liberate the chlorine as Cl− ion. This was precipitated as AgCl, with a mass of 0.1840 g. What is the mass percent of 2,4-D in the sample?
2,4-D (2,4-dichlorophenoxyacetic acid)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A herbicide contains 2,4-D
(2,4-dichlorophenoxyacetic acid),
C8 H6 Cl2 O3. A 1.265-g sample of the herbicide was
decomposed to liberate the chlorine as C1 ion. This was
precipitated as AgCl, with a mass of 0.1410 g. What is the
mass percent of 2,4-D in the sample?
OCH₂CO₂H
H
Mass percent =
H
C
CL
2,4-D (2,4-dichlorophenoxyacetic acid).
%
'H
To determine the amount of magnetite, Fe3O4 in an impure ore, a 1.5419 g sample is dissolved in concentrated HCl to obtain a mixture of Fe2 + and Fe3 +. After HNO3 is added to oxidize Fe2 + to Fe3 + and diluted with water, Fe3 + is precipitated as Fe (OH) 3 by adding NH3. 0.8525 g of pure Fe2O3 is obtained by filtering, rinsing and burning the precipitate. Calculate the percentage of Fe3O4% in the sample. (Fe = 55,847g / mol, O = 15,999g / mol)
explain
Chapter 4 Solutions
Chemistry & Chemical Reactivity
Ch. 4.1 - What mass of oxygen, O2, is required to completely...Ch. 4.1 - Aluminum reacts with Cl2 to form AlCl3. If you...Ch. 4.1 - Prob. 2RCCh. 4.2 - The thermite reaction produces iron metal and...Ch. 4.2 - Prob. 1RCCh. 4.3 - Aluminum carbide, Al4C3, reacts with water to...Ch. 4.3 - 2. If only 13.6 g of methane is obtained, what is...Ch. 4.4 - One method for determining the purity of a sample...Ch. 4.4 - A 0523-g sample of the unknown compound CxHy was...Ch. 4.4 - Prob. 3CYU
Ch. 4.4 - A 0509-g sample of an unknown organic compound...Ch. 4.5 - Sodium bicarbonate, NaHCO3, is used in baking...Ch. 4.5 - An experiment calls for you to use 250. mL of 1.00...Ch. 4.5 - 1. A 1.71-g sample of Ba(OH)2(s) was dissolved in...Ch. 4.5 - Prob. 2RCCh. 4.5 - 3. What volume of 0.250 M KMnO4(aq) contains 0.500...Ch. 4.6 - (a) What is the pH of a solution of HCI in which...Ch. 4.6 - Which of the solutions listed below has the lowest...Ch. 4.6 - A 0.365-g sample of HCl is dissolved in enough...Ch. 4.6 - 3. A solution has a pH of 10.54. What is the...Ch. 4.7 - Prob. 1CYUCh. 4.7 - A 25.0-mL sample of vinegar (which contains the...Ch. 4.7 - Hydrochloric acid. HCl, with a concentration of...Ch. 4.7 - An unknown monoprotic acid reacts with NaOH...Ch. 4.7 - Vitamin C, ascorbic acid (C6HgO6)(molar mass 176.1...Ch. 4.7 - Prob. 1RCCh. 4.7 - What volume of 0.250 M NaOH is required to react...Ch. 4.8 - Prob. 1CYUCh. 4.8 - Prob. 1RCCh. 4.8 - Prob. 2RCCh. 4 - The reaction of iron(III) oxide with aluminum to...Ch. 4 - What mass of HCI, in grams, is required to react...Ch. 4 - Like many metals, aluminum reacts with a halogen...Ch. 4 - The balanced equation for the reduction of iron...Ch. 4 - Methane, CH4, burns in oxygen. (a) What are the...Ch. 4 - The formation of water-Insoluble silver chloride...Ch. 4 - The metals industry was a major source of air...Ch. 4 - Prob. 8PSCh. 4 - Chromium metal reacts with oxygen to give...Ch. 4 - Ethane, C2H6, burns in oxygen. (a) What are the...Ch. 4 - Prob. 11PSCh. 4 - Ammonia gas can be prepared by the reaction of a...Ch. 4 - The compound SF6 is made by burning sulfur in an...Ch. 4 - Disulfur dichloride, S2Cl2, is used to vulcanize...Ch. 4 - The reaction of methane and water is one way to...Ch. 4 - Aluminum chloride AlCl3, is made by treating scrap...Ch. 4 - In the thermite reaction, iron(III) oxide is...Ch. 4 - Aspirin, C6H4 (OCOCH3) CO3H, is produced by the...Ch. 4 - In Example 4.2, you found that a particular...Ch. 4 - Ammonia gas can be prepared by the following...Ch. 4 - The deep blue compound Cu(NH3)4S04 is made by the...Ch. 4 - Black smokers are found in the depths of the...Ch. 4 - The reaction of methane and water is one way to...Ch. 4 - Methanol, CH3OH, can be prepared from carbon...Ch. 4 - A mixture of CuSO4 and CuSO4.5 H2O has a mass of...Ch. 4 - A 2.634-g sample containing impure CuCl2 2 H2O was...Ch. 4 - Prob. 27PSCh. 4 - Prob. 28PSCh. 4 - Nickel(II) sulfide, NiS, occurs naturally as the...Ch. 4 - The aluminum in a 0.764-g sample of an unknown...Ch. 4 - Prob. 31PSCh. 4 - Mesitylene is a liquid hydrocarbon Burning 0.115 g...Ch. 4 - Naphthalene is a hydrocarbon that once was used in...Ch. 4 - Azulene is a beautiful blue hydrocarbon. If 0.106...Ch. 4 - An unknown compound has the formula CxHyOz. You...Ch. 4 - An unknown compound has the formula CxHyOz. You...Ch. 4 - Nickel forms a compound with carbon monoxide,...Ch. 4 - To find the formula of a compound composed of iron...Ch. 4 - If 6.73 g of Na2CO3 is dissolved in enough water...Ch. 4 - Some potassium dichromate (K2Cr2O7), 2.335 g, is...Ch. 4 - What is the mass of solute, in grams, in 250, mL...Ch. 4 - Prob. 42PSCh. 4 - What volume of 0123 M NaOH, in milliliters,...Ch. 4 - What volume of 2.06 M KMnO4, in liters, contains...Ch. 4 - Identify the ions that exist in each aqueous...Ch. 4 - Identify the ions that exist in each aqueous...Ch. 4 - An experiment in your laboratory requires 500. mL...Ch. 4 - What mass of oxalic acid, H2C2O4, is required to...Ch. 4 - If you dilute 25.0 mL of 1.50 M hydrochloric acid...Ch. 4 - If 4.00 mL of 0.0250 M CuSO4 is diluted to 10.0 mL...Ch. 4 - Which of the following methods would you use to...Ch. 4 - Which of the following methods would you use to...Ch. 4 - You have 250. mL of 0.136 M HCl. Using a...Ch. 4 - Prob. 54PSCh. 4 - A table wine has a pH of 3.40. What is the...Ch. 4 - A saturated solution of milk of magnesia, Mg(OH)2,...Ch. 4 - Prob. 57PSCh. 4 - Prob. 58PSCh. 4 - Prob. 59PSCh. 4 - Prob. 60PSCh. 4 - Prob. 61PSCh. 4 - What mass of Na2CO3, in grams, is required for...Ch. 4 - When an electric current is passed through an...Ch. 4 - Hydrazine, N2H4, a base like ammonia, can react...Ch. 4 - In the photographic developing process, silver...Ch. 4 - You can dissolve an aluminum soft drink can in an...Ch. 4 - What volume of 0.750 M Pb(NO3)2, in milliliters,...Ch. 4 - What volume of 0.125 M oxalic acid, H2C2O4, is...Ch. 4 - What volume of 0.812 M HCI, in milliliters, is...Ch. 4 - What volume of 0.955 M HCl, in milliliters, is...Ch. 4 - If 38.55 mL of HCI is required to titrate 2.150 g...Ch. 4 - Potassium hydrogen phthalate, KHCgH4O4, is used to...Ch. 4 - You have 0.954 g of an unknown acid, H2A, which...Ch. 4 - An unknown solid acid is either citric acid or...Ch. 4 - To analyze an iron-containing compound, you...Ch. 4 - Vitamin C has the formula C6H8O6. Besides being an...Ch. 4 - Prob. 77PSCh. 4 - Suppose 16.04 g of benzene, C6H6, is burned in...Ch. 4 - The metabolic disorder diabetes causes a buildup...Ch. 4 - Your body deals with excess nitrogen by excreting...Ch. 4 - The reaction of iron metal and chlorine gas to...Ch. 4 - Prob. 83GQCh. 4 - The reaction of 750. g each of NH3 and O2 was...Ch. 4 - Sodium azide, an explosive chemical used in...Ch. 4 - Prob. 86GQCh. 4 - Prob. 87GQCh. 4 - Prob. 88GQCh. 4 - Prob. 89GQCh. 4 - A Menthol, from oil of mint, has a characteristic...Ch. 4 - Benzoquinone, a chemical used in the dye industry...Ch. 4 - Aqueous solutions of iron(II) chloride and sodium...Ch. 4 - Sulfuric acid can be prepared starting with the...Ch. 4 - Prob. 94GQCh. 4 - An unknown metal reacts with oxygen to give the...Ch. 4 - Titanium(IV) oxide, TiO2, is heated in hydrogen...Ch. 4 - Potassium perchlorate is prepared by the following...Ch. 4 - A Commercial sodium "hydrosulfite" is 90.1%...Ch. 4 - What mass of lime, CaO, can be obtained by heating...Ch. 4 - The elements silver, molybdenum, and sulfur...Ch. 4 - A mixture of butene, C4Hg, and butane, is burned...Ch. 4 - Cloth can be waterproofed by coating it with a...Ch. 4 - Copper metal can be prepared by roasting copper...Ch. 4 - Prob. 104GQCh. 4 - Sodium bicarbonate and acetic acid react according...Ch. 4 - A noncarbonated soft drink contains an unknown...Ch. 4 - Sodium thiosulfate, Na2S2O3, is used as a fixer in...Ch. 4 - You have a mixture of oxalic acid, H2C2O4, and...Ch. 4 - (a) What is the pH of a 0.105 M HCl solution? (b)...Ch. 4 - A solution of hydrochloric acid has a volume of...Ch. 4 - One half liter (500. mL) of 2.50 M HCl is mixed...Ch. 4 - A solution of hydrochloric acid has a volume of...Ch. 4 - Prob. 113GQCh. 4 - Prob. 115GQCh. 4 - Prob. 116GQCh. 4 - Gold can be dissolved from gold-bearing rock by...Ch. 4 - You mix 25.0 mL of 0.234 M FeCl3 with 42.5 mL of...Ch. 4 - Prob. 119GQCh. 4 - ATOM ECONOMY: Ethylene oxide, C2H4O, is an...Ch. 4 - Suppose you dilute 25.0 mL of a 0.110 M solution...Ch. 4 - Prob. 122ILCh. 4 - Oyster beds in the oceans require chloride ions...Ch. 4 - You wish to determine the weight percent of copper...Ch. 4 - Prob. 126ILCh. 4 - Chromium(III) chloride forms many compounds with...Ch. 4 - Thioridazine, C21H26N2S2, is a pharmaceutical...Ch. 4 - A herbicide contains 2,4-D...Ch. 4 - Sulfuric acid is listed in a catalog with a...Ch. 4 - Two beakers sit on a balance; the total mass is...Ch. 4 - A weighed sample of iron (Fe) is added to liquid...Ch. 4 - Let us explore a reaction with a limiting...Ch. 4 - Two students titrate different samples of the same...Ch. 4 - ATOM ECONOMY: Benzene, C6H6, is a common compound,...Ch. 4 - ATOM ECONOMY: Maleic anhydride, C4H2O3, can be...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Phosphate buffers are important in regulating the pH of intracellular fluids. If the concentration ratio of H2PO4/HPO42 in a sample of intracellular fluid is 1.1: 1, what is the pH of this sample of intracellular fluid? H2PO4(aq)HPO42(aq)+H+(aq)Ka=6.2108arrow_forwardA chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric acid, and metastannic acid, H2SnO3, is precipitated. She heats the precipitate to drive off the water, which leaves 0.4909 g of tin(IV) oxide. What was the percentage of [in in the original sample?arrow_forwardThe presence of arsenic in a sample that may also contain another Group 5A element, antimony, can be confirmed by first precipitating the As3+ and Sb3+ ions as yellow solid As2S3 and orange solid Sb2S3. If aqueous HCI is then added, only Sb2S3 dissolves, leaving behind solid As2S3. The As2S3 can then be dissolved using aqueous HNO3. 3 As2S3(s) + 10 HNO3(aq) + 4 H2O() 6 H3AsO4(aq) + 10 NO(g) + 9 S(s) Finally, the presence of arsenic is confirmed by adding AgNO3 to the solution of H3AsO4 to precipitate a reddish brown solid AgxAsOy The composition of this solid is As, 16.199% and Ag, 69.964%. (a) What are the oxidation numbers of As, S, and N in the reaction of As2S3 with nitric acid? (b) What is the formula of the reddish brown solid AgxAsOy?arrow_forward
- 1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in concentrated HCl, giving a mixture of Fe²+ and Fe+. After adding HNO3 to oxidize any Fe2+ to Fe+, the resulting solution was diluted with water and the Fe precipitated as Fe(OH)3 by adding NH3. After filtering and rinsing, the residue was ignited, resulting to 0.8525 g of pure Fe2O3. Calculate the: a) % (w/w) Fe b) % (w/w) Fe;O4 in the sample.arrow_forward1. A sample containing magnetite, Fe;O4, was analyzed by dissolving a 1.5419-g sample in concentrated HCI, giving a mixture of Fe2+ and Fe³+. After adding HNO3 to oxidize any Fe2+ to Fet, the resulting solution was diluted with water and the Fe+ precipitated as Fe(OH)3 by adding NH3. After filtering and rinsing, the residue was ignited, resulting to 0.8525 g of pure Fe2O3. Calculate the: a) % (w/w) Fe b) % (w/w) Fe;O4 in the sample.arrow_forwardNitrogen of ammonia can be determined by treatment of the sample with chloroplatinic acid; the product is slightly soluble ammonium chloroplatinate: H₂PtCl 6 + 2NH4+ → (NH4)2PtCl6 + 2H+ The precipitate decomposes on ignition, yielding metallic platinum and gaseous products: (NH4)2PtCl6 3 → Pt(s) + 2Cl₂(g) + 2NH3(g)↑ + 2HCl(g)↑ Calculate the percentage of ammonia in a sample if 0.2115 g of the impure sample gave rise to 0.4693 g of platinum. Given: M(NH3) = 17.0306 g/mol; M(Pt) = 195.08 g/mol. O O b. 14.25% O O d. 82.38% a. 56.52% c. 38.74%arrow_forward
- A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric acid, and metastannic acid, H2SnO3, is precipitated. She heats the precipitate to drive off the water, which leaves 0.4909 g oftin(IV) oxide. What was the percentage of tin in the original sample?arrow_forward1. Calculate the amount (grams) of solid NiSO4·(H2O)6 that is needed to prepare 100 mL of concentrated 0.40 M NiSO4·(H2O)6 solution. 2.Determine the volume of the stock 0.40M nickel (II) sulfate solution that would need to be transferred to a 50.0mL volumetric flask and diluted to achieve the following final concentration: 50.0 mL of a 0.08 M nickel (II) sulfate solution from the original 0.40 M stock solutionarrow_forward2. A 0.1864 g sample of an unknown Ni(II) salt was put into solution and properly treated to form the solid nickel(II) complex (molar mass=288.917 g mol ¹). When the precipitate was rinsed, dried, and cooled, dimethylglyoxime it was determined to have a mass of 0.1165 g. Calculate the mass of nickel in the precipitate and the percent (by mass) of nickel in the original (unknown) salt sample.arrow_forward
- the reaction of sodium phosphate (Na3PO4) solution with lead (II) chlorate [Pb(ClO3)2] solution produces a precipitate. Give the balanced molecular equation for this reactionarrow_forwardA metallurgical laboratory carried out analysis of a sample in which analysis of Mn was done by forming a precipitate of MnSO4. If 3.18 g of ore sample gives 0.28 g of MnSO4. Calculate the percentage of Mn present in the sample.arrow_forwardChemical formula for chromium (III) hydroxidearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
O-Level Chemistry | 16 | Qualitative Analysis [1/3]; Author: Bernard Ng;https://www.youtube.com/watch?v=oaU8dReeBgA;License: Standard YouTube License, CC-BY