Concept explainers
Interpretation:
Whether the given
Concept Introduction:
The
Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.
Reduction is the process in which either gain of electrons, oxidation number decreases, or gain hydrogen atoms takes place. An element is reduced, when oxidation number decreases.
Oxidizing agent are those which are reduced in a chemical reaction or gain electrons whereas reducing agents are those which are oxidized in a chemical reaction or lose electrons.
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Introductory Chemistry: A Foundation
- Manganese metal can be obtained by reaction of manganese dioxide with aluminum. 4Al(s)+3MnO2(s)2Al2O3(s)+3Mn(s) What is H for this reaction? Use the following data: 2Al(s)+32O2(g)Al2O3(s);H=1676kJMn(s)+O2(g)MnO2(s);H=520kJarrow_forwardHow many grams of oxygen are liberated by the electrolysis of water with a current of 0.0565 A after 1.85 104s?arrow_forwardCalculate G for the following reaction at 25C. Use data given in Tables 6.2 and 18.1. CH4(g)+2O2(g)CO2(g)+2H2O(g)arrow_forward
- To what temperature must magnesium carbonate be heated to decompose it to MgO and CO2 at 1 atm? Is this higher or lower than the temperature required to decompose CaCO3? Values of Gf (in kJ/mol) are as follows: MgO(s), 601.2; MgCO3(s), 1111.7. Values of S (in J/K.) are as follows: MgO(s), 26.9; MgCO3(s), 65.9. Data for CO2 are given in Tables 6.2 and 18.1.arrow_forwardCalculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an aqueous solution of ammonium nitrate, NH4NO3, at 25C. (Figure 6.1 illustrated this reaction using solids instead of solutions.) The complete ionic equation is Ba2+(aq)+2OH(aq)+2NH4+(aq)+2NO3(aq)2NH3(g)+2H2O(l)+Ba2+(aq)+2NO3(aq)arrow_forwardIodide ion is oxidized by hypochlorite ion in basic solution. I(aq)+ClO(aq)Cl(aq)+IO(aq) In 1.00 M NaOH at 25C, the iodide-ion concentration (equal to the ClO concentration) at different times was as follows: Time [I ] 2.00 s 0.00169 M 8.00 s 0.00101 M Calculate the average rate of reaction of I during this time interval.arrow_forward
- If electrodes that are connected to a direct current (DC) source are dipped into a beaker of collodial iron(III) hydroxide, a precipitate collects at the negative electrode. Explain why this happens.arrow_forwardWhat is the nickel(II)-ion concentration in the voltaic cell Zn(s)Zn2+(1.00M)Ni2+(aq)Ni(s) if the cell potential is 0.34 V at 25C?arrow_forwardConsider the decomposition of dinitrogen tetroxide, N2O4, to nitrogen dioxide, NO2: N2O4(g)2NO2(g) How would you expect the spontaneity of the reaction to behave with temperature change?arrow_forward
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningGeneral 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 LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning