Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 3, Problem 93SCQ
The 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(ℓ) → 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?
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Chapter 3 Solutions
Chemistry & Chemical Reactivity
Ch. 3.1 - The reaction of aluminum with bromine is shown...Ch. 3.1 - If you were to use 8000 atoms of Al, how many...Ch. 3.2 - (a) Butane gas, C4H10, can burn completely in air...Ch. 3.2 - The (unbalanced) equation describing the oxidation...Ch. 3.3 - Prob. 1RCCh. 3.4 - Predict whether each of the following ionic...Ch. 3.4 - Prob. 1RCCh. 3.4 - Prob. 2RCCh. 3.4 - Prob. 3RCCh. 3.5 - In each of the following cases, does a...
Ch. 3.5 - In each of the following cases, aqueous solutions...Ch. 3.5 - Prob. 1RCCh. 3.5 - What is the net ionic equation for the reaction of...Ch. 3.6 - Prob. 1CYUCh. 3.6 - Prob. 2CYUCh. 3.6 - Prob. 1RCCh. 3.6 - 2. The hydrogen phosphate ion is amphiprotic....Ch. 3.6 - What is the net ionic equation for the reaction of...Ch. 3.6 - Prob. 4RCCh. 3.7 - Prob. 1CYUCh. 3.7 - Prob. 1RCCh. 3.8 - Assign an oxidation number to the underlined atom...Ch. 3.8 - Prob. 2CYUCh. 3.8 - 1. What is the oxidation number of Mn in...Ch. 3.8 - Prob. 2RCCh. 3.8 - 3. In which of the manganese compounds below does...Ch. 3.9 - Prob. 1CYUCh. 3.9 - 1. Sometimes a reaction can fall in more than one...Ch. 3.9 - Prob. 1QCh. 3.9 - Prob. 2QCh. 3.9 - Prob. 3QCh. 3.9 - Prob. 4QCh. 3.9 - Prob. 5QCh. 3 - Write balanced chemical equations for the...Ch. 3 - Write balanced chemical equations for the...Ch. 3 - Prob. 3PSCh. 3 - Prob. 4PSCh. 3 - Prob. 5PSCh. 3 - Balance the following equations, and name each...Ch. 3 - Equal amounts of two acidsHCl and HCO2H (formic...Ch. 3 - Prob. 8PSCh. 3 - What is an electrolyte? How can you differentiate...Ch. 3 - Name and give the formulas of two acids that are...Ch. 3 - Which compound or compounds in each of the...Ch. 3 - Which compound or compounds in each of the...Ch. 3 - The following compounds are water-soluble. What...Ch. 3 - The following compounds are water-soluble. What...Ch. 3 - Decide whether each of the following is...Ch. 3 - Decide whether each of the following is...Ch. 3 - Balance the equation for the following...Ch. 3 - Balance the equation for the following...Ch. 3 - Predict the products of each precipitation...Ch. 3 - Prob. 20PSCh. 3 - Write a balanced equation for the ionization of...Ch. 3 - Write a balanced equation for the ionization of...Ch. 3 - Prob. 23PSCh. 3 - Phosphoric add can supply one, two, or three H3O+...Ch. 3 - Prob. 25PSCh. 3 - Prob. 26PSCh. 3 - Prob. 27PSCh. 3 - Prob. 28PSCh. 3 - Prob. 29PSCh. 3 - Prob. 30PSCh. 3 - Write an equation that describes the equilibrium...Ch. 3 - Write an equation that describes the equilibrium...Ch. 3 - Prob. 33PSCh. 3 - Write two chemical equations, one in which H2PO4...Ch. 3 - Balance the following equations, and then write...Ch. 3 - Balance the following equations, and then write...Ch. 3 - Prob. 37PSCh. 3 - Balance each of the following equations, and then...Ch. 3 - Write balanced net ionic equations for the...Ch. 3 - Write balanced net ionic equations for the...Ch. 3 - Siderite is a mineral consisting largely of...Ch. 3 - The mineral rhodothrosite is manganese()...Ch. 3 - Prob. 43PSCh. 3 - Prob. 44PSCh. 3 - Determine the oxidation number of each element in...Ch. 3 - Determine the oxidation number of each element in...Ch. 3 - Prob. 47PSCh. 3 - Which two of the following reactions are...Ch. 3 - In the following reactions, decide which reactant...Ch. 3 - In the following reactions, decide which reactant...Ch. 3 - Balance the following equations, and then classify...Ch. 3 - Prob. 52PSCh. 3 - Classify each of the following reactions as a...Ch. 3 - Prob. 54PSCh. 3 - Balance each of the following equations, and...Ch. 3 - Complete and balance the equations below, and...Ch. 3 - Prob. 57PSCh. 3 - Prob. 58PSCh. 3 - Balance the following equations: (a) for the...Ch. 3 - Balance the following equations: (a) for the...Ch. 3 - Prob. 61GQCh. 3 - Give the formula for each of the following...Ch. 3 - Prob. 63GQCh. 3 - Name two anions that combine with Al3+ ion to...Ch. 3 - Write the net ionic equation and identify the...Ch. 3 - Identify and name the water-insoluble product in...Ch. 3 - Bromine is obtained from sea water by the...Ch. 3 - Identify each of the blowing substances as a...Ch. 3 - The mineral dolomite contains magnesium...Ch. 3 - Aqueous solutions of ammonium sulfide, (NH4)2S,...Ch. 3 - Prob. 71GQCh. 3 - Prob. 72GQCh. 3 - Balance equations for these reactions that occur...Ch. 3 - Prob. 74GQCh. 3 - You are given mixtures containing the following...Ch. 3 - Identify, from each list below, the compound or...Ch. 3 - Prob. 77GQCh. 3 - Prob. 78GQCh. 3 - Gas evolution was observed when a solution of Na2S...Ch. 3 - Prob. 81ILCh. 3 - Prob. 82ILCh. 3 - Prob. 83ILCh. 3 - A Suggest a laboratory method for preparing barium...Ch. 3 - The Toliens test for the presence of reducing...Ch. 3 - There are many ionic compounds that dissolve in...Ch. 3 - Most naturally occurring acids are weak acids....Ch. 3 - You want to prepare barium chloride, BaC12, using...Ch. 3 - Prob. 89SCQCh. 3 - A Describe how to prepare zinc chloride by (a) an...Ch. 3 - A common method for analyzing for the nickel...Ch. 3 - The presence of arsenic in a sample that may also...
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