Connect for Chemistry
13th Edition
ISBN: 9781260161854
Author: Raymond Chang, Jason Overby
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 4, Problem 4.48QP
Give the oxidation number for the following species: H2, Se8, P4, O, U, As4, B12.
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One method for the analysis of Fe3+, which is used with a variety of sample matrices, is to form the highly colored Fe3+–thioglycolic acid complex. The complex absorbs strongly at 535 nm. Standardizing the method is accomplished using external standards. A 10.00-ppm Fe3+ working standard is prepared by transferring a 10-mL aliquot of a 100.0 ppm stock solution of Fe3+ to a 100-mL volumetric flask and diluting to volume. Calibration standards of 1.00, 2.00, 3.00, 4.00, and 5.00 ppm are prepared by transferring appropriate amounts of the 10.0 ppm working solution into separate 50-mL volumetric flasks, each of which contains 5 mL of thioglycolic acid, 2 mL of 20% w/v ammonium citrate, and 5 mL of 0.22 M NH3. After diluting to volume and mixing, the absorbances of the external standards are measured against an appropriate blank. Samples are prepared for analysis by taking a portion known to contain approximately 0.1 g of Fe3+, dissolving it in a minimum amount of HNO3, and diluting to…
Chapter 4 Solutions
Connect for Chemistry
Ch. 4.1 - Prob. 1RCFCh. 4.1 - Predict whether the following compounds are a...Ch. 4.2 - Classify the following ionic compounds as soluble...Ch. 4.2 - Predict the precipitate produced by mixing an...Ch. 4.2 - Which of the diagrams (a)(c) accurately describes...Ch. 4.2 - Classify each of the following compounds as...Ch. 4.2 - Prob. 3RCFCh. 4.3 - Classify each of the following species as a...Ch. 4.3 - Write a molecular equation, an ionic equation, and...Ch. 4.3 - Which of the diagrams (a)(c) best represents a...
Ch. 4.3 - Identify the Brnsted acid and Brnsted base in the...Ch. 4.3 - Write the net ionic equation for the following...Ch. 4.4 - Assign oxidation numbers to all the elements in...Ch. 4.4 - Prob. 6PECh. 4.4 - Which of the following combination reactions is...Ch. 4.4 - Prob. 2RCFCh. 4.5 - Prob. 7PECh. 4.5 - Prob. 8PECh. 4.5 - Prob. 9PECh. 4.5 - Prob. 1RCFCh. 4.5 - Prob. 2RCFCh. 4.5 - What mass of Ca(NO3)2 in grams is needed to...Ch. 4.6 - A sample of 0.3220 g of an ionic compound...Ch. 4.6 - Prob. 1RCFCh. 4.7 - How many grams of KHP are needed to neutralize...Ch. 4.7 - Prob. 12PECh. 4.7 - Prob. 2RCFCh. 4.8 - Prob. 13PECh. 4.8 - If a solution of a reducing agent is titrated with...Ch. 4.8 - The concentration of a KMnO4 solution can be...Ch. 4 - Define solute, solvent, and solution by describing...Ch. 4 - What is the difference between a nonelectrolyte...Ch. 4 - Describe hydration. What properties of water...Ch. 4 - What is the difference between the following...Ch. 4 - Water is an extremely weak electrolyte and...Ch. 4 - Sodium sulfate (Na2SO4) is a strong electrolyte....Ch. 4 - Prob. 4.7QPCh. 4 - Prob. 4.8QPCh. 4 - Identify each of the following substances as a...Ch. 4 - Identify each of the following substances as a...Ch. 4 - The passage of electricity through an electrolyte...Ch. 4 - Predict and explain which of the following systems...Ch. 4 - You are given a water-soluble compound X. Describe...Ch. 4 - Explain why a solution of HCl in benzene does not...Ch. 4 - What is the difference between an ionic equation...Ch. 4 - What is the advantage of writing net ionic...Ch. 4 - Two aqueous solutions of AgNO3 and NaCl are mixed....Ch. 4 - Two aqueous solutions of KOH and MgCl2 are mixed....Ch. 4 - Characterize the following compounds as soluble or...Ch. 4 - Characterize the following compounds as soluble or...Ch. 4 - Write ionic and net ionic equations for the...Ch. 4 - Write ionic and net ionic equations for the...Ch. 4 - Which of the following processes will likely...Ch. 4 - Prob. 4.24QPCh. 4 - List the general properties of acids and bases.Ch. 4 - Give Arrheniuss and Brnsteds definitions of an...Ch. 4 - Give an example of a monoprotic acid, a diprotic...Ch. 4 - What are the characteristics of an acid-base...Ch. 4 - What factors qualify a compound as a salt? Specify...Ch. 4 - Prob. 4.30QPCh. 4 - Prob. 4.31QPCh. 4 - Identify each of the following species as a...Ch. 4 - Balance the following equations and write the...Ch. 4 - Balance the following equations and write the...Ch. 4 - Prob. 4.35QPCh. 4 - True or false: All combustion reactions are redox...Ch. 4 - Prob. 4.37QPCh. 4 - Prob. 4.38QPCh. 4 - How is the activity series organized? How is it...Ch. 4 - Use the following reaction to define redox...Ch. 4 - Prob. 4.41QPCh. 4 - What is the requirement for an element to undergo...Ch. 4 - For the complete redox reactions given here, (i)...Ch. 4 - Prob. 4.44QPCh. 4 - Arrange the following species in order of...Ch. 4 - Phosphorus forms many oxoacids. Indicate the...Ch. 4 - Give the oxidation number of the underlined atoms...Ch. 4 - Give the oxidation number for the following...Ch. 4 - Give oxidation number for the underlined atoms in...Ch. 4 - Give the oxidation number of the underlined atoms...Ch. 4 - Nitric acid is a strong oxidizing agent. State...Ch. 4 - Which of the following metals can react with...Ch. 4 - On the basis of oxidation number considerations,...Ch. 4 - Predict the outcome of the reactions represented...Ch. 4 - Classify the following redox reactions. (a)...Ch. 4 - Classify the following redox reactions. (a)...Ch. 4 - Which of the following are redox processes?...Ch. 4 - Of the following, which is most likely to be the...Ch. 4 - Write the equation for calculating molarity. Why...Ch. 4 - Describe the steps involved in preparing a...Ch. 4 - Describe the basic steps involved in diluting a...Ch. 4 - Write the equation that enables us to calculate...Ch. 4 - Calculate the mass of KI in grams required to...Ch. 4 - Describe how you would prepare 250 mL of a 0.707 M...Ch. 4 - Prob. 4.65QPCh. 4 - Prob. 4.66QPCh. 4 - Calculate the molarity of each of the following...Ch. 4 - Calculate the molarity of each of the following...Ch. 4 - Calculate the volume in milliliters of a solution...Ch. 4 - Prob. 4.70QPCh. 4 - What volume of 0.416 M Mg(NO3)2 should be added to...Ch. 4 - Barium hydroxide, often used to titrate weak...Ch. 4 - Describe how to prepare 1.00 L of 0.646 M HCl...Ch. 4 - Water is added to 25.0 mL of a 0.866 M KNO3...Ch. 4 - How would you prepare 60.0 mL of 0.200 M HNO3 from...Ch. 4 - You have 505 mL of a 0.125 M HCl solution and you...Ch. 4 - A 35.2-mL, 1.66 M KMnO4 solution is mixed with...Ch. 4 - A 46.2-mL, 0.568 M calcium nitrate [Ca(NO3)2]...Ch. 4 - Describe the basic steps involved in gravimetric...Ch. 4 - Distilled water must be used in the gravimetric...Ch. 4 - If 30.0 mL of 0.150 M CaCl2 is added to 15.0 mL of...Ch. 4 - A sample of 0.6760 g of an unknown compound...Ch. 4 - How many grams of NaCl are required to precipitate...Ch. 4 - The concentration of sulfate in water can be...Ch. 4 - Describe the basic steps involved in an acid-base...Ch. 4 - How does an acid-base indicator work?Ch. 4 - Prob. 4.87QPCh. 4 - Would the volume of a 0.10 M NaOH solution needed...Ch. 4 - A quantity of 18.68 mL of a KOH solution is needed...Ch. 4 - Calculate the concentration (in molarity) of a...Ch. 4 - Calculate the volume in milliliters of a 1.420 M...Ch. 4 - What volume of a 0.500 M HCl solution is needed to...Ch. 4 - What are the similarities and differences between...Ch. 4 - Explain why potassium permanganate (KMnO4) and...Ch. 4 - Iron(II) can be oxidized by an acidic K2Cr2O7...Ch. 4 - The SO2 present in air is mainly responsible for...Ch. 4 - Prob. 4.97QPCh. 4 - The concentration of a hydrogen peroxide solution...Ch. 4 - Oxalic acid (H2C2O4) is present in many plants and...Ch. 4 - Prob. 4.100QPCh. 4 - Iodate ion, IO3, oxidizes SO32 in acidic solution....Ch. 4 - Calcium oxalate (CaC2O4), the main component of...Ch. 4 - Prob. 4.103QPCh. 4 - Prob. 4.104QPCh. 4 - Prob. 4.105QPCh. 4 - A 5.00 102 mL sample of 2.00 M HCl solution is...Ch. 4 - Shown are two aqueous solutions containing various...Ch. 4 - Shown are two aqueous solutions containing various...Ch. 4 - Calculate the volume of a 0.156 M CuSO4 solution...Ch. 4 - Prob. 4.110QPCh. 4 - A 3.664-g sample of a monoprotic acid was...Ch. 4 - Prob. 4.112QPCh. 4 - A 15.00-mL solution of potassium nitrate (KNO3)...Ch. 4 - When a 2.50-g zinc strip was placed in a AgNO3...Ch. 4 - Calculate the mass of the precipitate formed when...Ch. 4 - Calculate the concentration of the acid (or base)...Ch. 4 - (a) Describe a preparation for magnesium hydroxide...Ch. 4 - A 1.00-g sample of a metal X (that is known to...Ch. 4 - Prob. 4.119QPCh. 4 - The molecular formula of malonic acid is C3H4O4....Ch. 4 - Prob. 4.121QPCh. 4 - A 60.0-mL 0.513 M glucose (C6H12O6) solution is...Ch. 4 - An ionic compound X is only slightly soluble in...Ch. 4 - Prob. 4.124QPCh. 4 - Prob. 4.125QPCh. 4 - Prob. 4.126QPCh. 4 - The molar mass of a certain metal carbonate, MCO3,...Ch. 4 - Prob. 4.128QPCh. 4 - You are given a soluble compound of unknown...Ch. 4 - Prob. 4.130QPCh. 4 - Prob. 4.131QPCh. 4 - Prob. 4.132QPCh. 4 - Prob. 4.133QPCh. 4 - Prob. 4.134QPCh. 4 - Prob. 4.135QPCh. 4 - Prob. 4.136QPCh. 4 - Describe in each case how you would separate the...Ch. 4 - Prob. 4.138QPCh. 4 - Prob. 4.139QPCh. 4 - A 0.8870-g sample of a mixture of NaCl and KCl is...Ch. 4 - Prob. 4.141QPCh. 4 - Prob. 4.142QPCh. 4 - Prob. 4.143QPCh. 4 - A useful application of oxalic acid is the removal...Ch. 4 - Prob. 4.145QPCh. 4 - A 0.9157-g mixture of CaBr2 and NaBr is dissolved...Ch. 4 - Prob. 4.147QPCh. 4 - A 325-mL sample of solution contains 25.3 g of...Ch. 4 - Prob. 4.149QPCh. 4 - Prob. 4.150QPCh. 4 - Prob. 4.151QPCh. 4 - Prob. 4.152QPCh. 4 - Prob. 4.153QPCh. 4 - Prob. 4.154QPCh. 4 - Prob. 4.155QPCh. 4 - Prob. 4.156QPCh. 4 - Prob. 4.157QPCh. 4 - Prob. 4.158QPCh. 4 - Prob. 4.159QPCh. 4 - Prob. 4.160QPCh. 4 - The following cycle of copper experiment is...Ch. 4 - A quantity of 25.0 mL of a solution containing...Ch. 4 - Prob. 4.163QPCh. 4 - Prob. 4.165QPCh. 4 - Prob. 4.166QPCh. 4 - Prob. 4.167QPCh. 4 - Many proteins contain metal ions for structural...Ch. 4 - Prob. 4.170QPCh. 4 - Prob. 4.171QPCh. 4 - Prob. 4.172QPCh. 4 - Muriatic acid, a commercial-grade hydrochloric...Ch. 4 - Because acid-base and precipitation reactions...
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