ALEKS 360; 18WKS F/ GEN. CHEMISTRY >I<
13th Edition
ISBN: 9781264070077
Author: Chang
Publisher: INTER MCG
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Chapter 23, Problem 23.50QP
Interpretation Introduction
Interpretation: The oxidation states of
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Why do Selenium and tellurium occur in rare minerals?
1. A sample of iron ore weighing 0.6428 g is dissolved in acid The iron is reduced to Fe* and titrated
with 36.30 mL of a 0.1052 N solution of K,Cr207. (a) Calculate the percentage of iron (Fe) in the
sample. (b) Express the percentage as Fe,03 rather than Fe.
Hint: The reaction of Fe2+ with Cr,0,2 involves one electron to oxidize it to Fe*.
It's important to note that MnO is an alkaline metal, whereas Mn207 is an acidic metal. Why?
(ii) Alloys are formed from transition metals. Why?
Step 3: Solve the following equation:
Incorporating the following formula: 2MnO4 + 4KOH + O2
Chapter 23 Solutions
ALEKS 360; 18WKS F/ GEN. CHEMISTRY >I<
Ch. 23.1 - Identify the following transition metal atoms and...Ch. 23.3 - Write the oxidation numbers of the metals in the...Ch. 23.3 - Prob. 2PECh. 23.3 - Prob. 3PECh. 23.3 - Prob. 1RCFCh. 23.3 - What is the difference between these two...Ch. 23.3 - Prob. 3RCFCh. 23.4 - Prob. 1RCFCh. 23.5 - Prob. 4PECh. 23.5 - Prob. 1RCF
Ch. 23.5 - Determine the number of unpaired electrons in the...Ch. 23 - What distinguishes a transition metal from a...Ch. 23 - Why is zinc not considered a transition metal?Ch. 23 - Explain why atomic radii decrease very gradually...Ch. 23 - Without referring to the text, write the...Ch. 23 - Write the electron configurations of the following...Ch. 23 - Why do transition metals have more oxidation...Ch. 23 - Prob. 23.7QPCh. 23 - Prob. 23.8QPCh. 23 - Define the following terms: coordination compound,...Ch. 23 - Describe the interaction between a donor atom and...Ch. 23 - Prob. 23.11QPCh. 23 - Prob. 23.12QPCh. 23 - Prob. 23.13QPCh. 23 - Prob. 23.14QPCh. 23 - Prob. 23.15QPCh. 23 - What are the systematic names for the following...Ch. 23 - Prob. 23.17QPCh. 23 - Prob. 23.18QPCh. 23 - Define the following terms: stereoisomers,...Ch. 23 - Prob. 23.20QPCh. 23 - Prob. 23.21QPCh. 23 - Prob. 23.22QPCh. 23 - Prob. 23.23QPCh. 23 - Prob. 23.24QPCh. 23 - Draw structures of all the geometric and optical...Ch. 23 - Prob. 23.26QPCh. 23 - Briefly describe crystal field theory.Ch. 23 - Prob. 23.28QPCh. 23 - What is the origin of color in a coordination...Ch. 23 - Prob. 23.30QPCh. 23 - Prob. 23.31QPCh. 23 - Prob. 23.32QPCh. 23 - Prob. 23.33QPCh. 23 - Prob. 23.34QPCh. 23 - Prob. 23.35QPCh. 23 - The absorption maximum for the complex ion...Ch. 23 - Prob. 23.37QPCh. 23 - A solution made by dissolving 0.875 g of...Ch. 23 - Prob. 23.39QPCh. 23 - Prob. 23.40QPCh. 23 - Prob. 23.41QPCh. 23 - The [Fe(CN)6]3 complex is more labile than the...Ch. 23 - Aqueous copper(II) sulfate solution is blue in...Ch. 23 - When aqueous potassium cyanide is added to a...Ch. 23 - A concentrated aqueous copper(II) chloride...Ch. 23 - Prob. 23.46QPCh. 23 - As we read across the first-row transition metals...Ch. 23 - Prob. 23.48QPCh. 23 - Prob. 23.49QPCh. 23 - Prob. 23.50QPCh. 23 - Prob. 23.51QPCh. 23 - Chemical analysis shows that hemoglobin contains...Ch. 23 - Explain the following facts: (a) Copper and iron...Ch. 23 - A student in 1895 prepared three coordination...Ch. 23 - Prob. 23.55QPCh. 23 - From the standard reduction potentials listed in...Ch. 23 - Using the standard reduction potentials listed in...Ch. 23 - The Co2+-porphyrin complex is more stable than the...Ch. 23 - Prob. 23.59QPCh. 23 - Prob. 23.60QPCh. 23 - Hydrated Mn2+ ions are practically colorless (see...Ch. 23 - Which of the following hydrated cations are...Ch. 23 - Prob. 23.63QPCh. 23 - Prob. 23.64QPCh. 23 - Prob. 23.65QPCh. 23 - Prob. 23.66QPCh. 23 - The compound 1,1,1-trifluoroacetylacetone (tfa) is...Ch. 23 - Prob. 23.68QPCh. 23 - Prob. 23.69QPCh. 23 - Prob. 23.70QPCh. 23 - Prob. 23.71QPCh. 23 - Commercial silver-plating operations frequently...Ch. 23 - Draw qualitative diagrams for the crystal field...Ch. 23 - (a) The free Cu(I) ion is unstable in solution and...Ch. 23 - Prob. 23.75QPCh. 23 - Prob. 23.76QP
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- The ferrate ion, FeO42, is such a powerful oxidizing agent that in acidic solution, aqueous ammonia is reduced to elemental nitrogen along with the formation of the iron(III) ion. a. What is the oxidation state of iron in FeO42, and what is the electron configuration of iron in this polyatornic ion? b. lf 25.0 mL of a 0.243 M FeO42 solution is allowed to react with 55.0 mL of 1.45 M aqueous ammonia, what volume of nitrogen gas can form at 25C and 1.50 atm?arrow_forwardIdentify, based on the position in the periodic table, the actinide elements among those in the following list: Co, Cm, Cd, Ce, Cf.arrow_forwardThe minerals chalcocite (Cu2S) and malachite (CU2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals .a O The oxidation state of copper in chalcocite is +1, and in malachite it is +1. .b O The oxidation state of copper in chalcocite is +1, and in malachite it is +2. .C The oxidation state of copper in chalcocite is +2, and in malachite it is +1 .d O The oxidation state of copper in chalcocite is +2, and in malachite it is +2.arrow_forward
- 1. A sample of iron ore weighing 0.6428 g is dissolved in acid The iron is reduced to Fe*2 and titrated with 36.30 mL of a 0.1052 N solution of K2Cr207. (a) Calculate the percentage of iron (Fe) in the sample. (b) Express the percentage as Fe,03 rather than Fe. Hint: The reaction of Fe2+ with Cr,0,2 involves one electron to oxidize it to Fe*.arrow_forwardThe lanthanide elements reacts with oxygen to give compounds of the type Ln2O3.However,the are interesting exceptions ,such as common oxide of Terbium, TbxOy(y and x stand for unknown) 1.Given that the compound is 73.945%,what is its formula? 2.What is the oxidation number of terbium in this compound? 3.Write a balanced equation for the reaction of terbium and oxygen to give this oxide.arrow_forwardItem 29 29 of 33 > Part A is a metal? As Cl K Farrow_forward
- Why is the oxidation state of Fe 2.5?arrow_forwardHydroxylamine 1NH2OH2 reduces copper(II) to the free metal in acid solutions. Write a balanced equation for the reaction,assuming that N2 is the oxidation product.arrow_forwardMetal cations often form complex ions in solution or when reacted with suitable ligands. Write a balanced equation for the formation of Cu(en)22+ from Cu2+ and ethylenediamine (en) in an aqueous solution.arrow_forward
- Which of the following statements is true about hydride ions or compounds? Among second-row transition metals, yttrium (Y) is electron-poor and much more likely to form compounds with hydride ions than electron-rich elements like cadmium (Cd) will. The hydride ion is just as stable as a helium atom because they both have two electrons (filled first shell). The thermal decomposition of arsine (AsH3) is endothermic. Hydride is an isotope of hydrogen that has one neutron in each atom.arrow_forwardsketch a diagram showing the formation of energy levels from the valence orbitals for Li, Li2, Li3, Li(n). On the diagram, place arrows indicating how the electrons fill these energy levels How many energy levels are present in the valence band of a single crystal of lithium with a mass of 348.3 mg?arrow_forwardA blast furnace uses Fe₂O₃ to produce 8400. t of Fe per day.(a) What mass of CO₂ is produced each day?(b) Compare this amount of CO₂ with that produced by 1.0 million automobiles, each burning 5.0 gal of gasoline a day.Assume that gasoline has the formula C₈H₁₈ and a density of0.74 g/mL, and that it burns completely.arrow_forward
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