4:34 11 Bartleby) CHEMICAL REACTIONSdentifying oxidizing and reducing agentse whether each chemical reaction in the table below is an oxidation-reduction ("redreducing agent and the formula of the oxidizing agent.redox reaction?O yesО по2Na(s) + Cl, (g) 2NACI(s)reducingagent:oxidizingagent:redox reaction?O yesHCI(aq) + NH, (aq) → NH,CI (aq)reducingagent:oxidizingagent:redox reaction?O yesO no2Fe(s) + 3NIC1, (aq) → 2F€C1, (ag) + 3Ni(s)reducingagent:agent:BuizipixoExplanationChecke here to search

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= whether each chemical reaction in the table below is an oxidation-reduction ("red reducing agent and the formula of the oxidizing agent. redox reaction? yes O no 2Na(-) + C1,(2) 2NACI() reducing O agent: oxidizing agent: redox reaction? O yes O no HCI(aq) + NH, (aq) → NH,CI(aq) reducing agent: oxidizing agent: redox reaction? O yes O no 2Pe()+ 3NIC1, (aq) 2FEC1, (ag) + 3Ni() reducing agent: oxidizing agent:

= whether each chemical reaction in the table below is an oxidation-reduction ("red reducing agent and the formula of the oxidizing agent. redox reaction? yes O no 2Na(-) + C1,(2) 2NACI() reducing O agent: oxidizing agent: redox reaction? O yes O no HCI(aq) + NH, (aq) → NH,CI(aq) reducing agent: oxidizing agent: redox reaction? O yes O no 2Pe()+ 3NIC1, (aq) 2FEC1, (ag) + 3Ni() reducing agent: oxidizing agent:

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter4: Chemical Reactions

Section: Chapter Questions

Problem 4.92P: 4-92 Reaction of pentane, C5H12, with oxygen, O2, gives carbon dioxide and water. (a) Write a...

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4.112 A metallurgical firm wishes to dispose of 1300 gallons of waste sulfuric acid whose molarity is 1.37 M. Before disposal, it will be reacted with calcium hydroxide (slaked lime), which costs $0.23 per pound. (a) Write the balanced chemical equation for this process. (b) Determine the cost that the firm will incur from this use of slaked lime.
The iron content of hemoglobin is determined by destroying the hemoglobin molecule and producing small water-soluble ions and molecules. The iron in the aqueous solution is reduced to iron(II) ion and then titrated against potassium permanganate. In the titration, iron(ll) is oxidized to iron(III) and permanganate is reduced to manganese(II) ion. A 5.00-g sample of hemoglobin requires 32.3 mL of a 0.002100 M solution of potassium permanganate. The reaction with permanganate ion is MnO4(aq)+8H+(aq)+5Fe2+(aq)Mn2+(aq)+5Fe3+(aq)+4H2O What is the mass percent of iron in hemoglobin?
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?
The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.
4-81 (Chemical Connections 4C) Balance the lithium iodine battery redox reaction described in this sec tion and identify the oxidizing and reducing agents present.
4-92 Reaction of pentane, C5H12, with oxygen, O2, gives carbon dioxide and water. (a) Write a balanced equation for this reaction. (b) In this reaction, what is oxidized and what is reduced? (c) What is the oxidizing agent, and what is the reducing agent?
Why is it that when something gains electrons, it is said to be reduced? What is being reduced?
Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.
Magnesium metal (a component of alloys used in aircraft and a reducing agent used in the production of uranium, titanium, and other active metals) is isolated from sea water by the following sequence of reactions: Mg2+(aq)+Ca(OH)2(aq)Mg(OH)2(s)+Ca2+(aq)Mg(OH)2(s)+2HCl(aq)MgCl2(s)+2H2O(l)MgCl2(l)electrolysisMg(s)+Cl2+Cl2(g) Sea water has a density of 1.026 g/cm3 and contains 1272 parts per million of magnesium a5 Mg2+(aq) by mass. What mass, in kilograms, of Ca(OH)2; is required to precipitate 99.9% of the magnesium in 1.00103 L of sea water?
Chlorine gas was first prepared in 1774 by C. W. Scheele by oxidizing sodium chloride with manganese(IV) oxide. The reaction is NaCl(aq)+H2SO4(aq)+MnO2(s)Na2SO4(aq)+MnCl2(aq)+H2O(l)+Cl2(g) Balance this equation.
Many over-the-counter antacid tablets are now formulated using calcium carbonate as die active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting die stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a burp). Write die balanced chemical equation for this process.