Concept explainers
(a)
Interpretation:
The element which one is oxidized and which one is reduced should be identified in the given reaction.
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 of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.
(b)
Interpretation:
The element which one is oxidized and which one is reduced should be identified in the given reaction.
Concept Introduction:
The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.
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 of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.
Trending nowThis is a popular solution!
Chapter 18 Solutions
EBK INTRODUCTORY CHEMISTRY
- 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_forwardWrite the half-reactions for the electrolysis of the following molten compounds: a. KCl; b. KOH.arrow_forwardIn the commercial preparation of aluminum, aluminum oxide, Al2O3, is electrolyzed at 1000°C. (The mineral cryolite is added as a solvent.) Assume that the cathode reaction is Al³+ + 3e –→ Al How many coulombs of electricity are required to give 3.75 kg of aluminum? C Submit Answer Try Another Version 10 item attempts remainingarrow_forward
- Practice Question • What is being oxidized in this reaction? - NADH + ADP + Phosphate + O2 + H+ → NAD+ + ATP + H,0 - (A) ADP (В) АТР (C) The phosphorus in ADP but not the whole molecule (D) NADHarrow_forwardConcept Check on Oxidation and Reduction 1. True or false: When a substance is oxidized, it loses electrons 2. True or false: When a substance gains electrons, it is reduced. 3. True or false: When Zn is converted to Zn2* ion, zinc is oxidized. 4. True or false: Oxidation can also be defined as the loss of oxygen atoms and /or the gain of hydrogen atoms. 5. True or false: When oxygen, O2, is converted to hydrogen peroxide, H2O2, we say that O2 is reduced. 6. In the reaction: 2 H2 (g) O2 (9) ---> 2 H20 (1) + a) Which species is oxidized and which species is reduced? b) Which species is the oxidizing agent and which is the reducing agent? 7) When a piece of sodium metal, Na, is added to water, H2O, hydrogen gas, H2, is evolved and sodium hydroxide, NaOH, is formed. a) Write a balanced equation for this reaction? b) Which species is oxidized and which species is reduced?arrow_forwardPractice Exercise: Balance the following reactions using the ion-electron method showing the steps. For each reaction, identify the anode, the cathode, the oxidizing agent and reducing agent. Write the overall (final) reaction. 2. CN + Mno, CNO- + Mno, (basic medium)arrow_forward
- In which of the following compounds does Cl have an oxidation number of +5 ?a) HClOb) KClO2c) Ca(ClO3)2d) more than one correct responsee) no correct response In which of the following sequences of sulfur-containing ions are the ions arranged in order of decreasing oxidation number for S?a) SO32–, SO42–, S2–b) SO42–, S2O32–, S2–c) S2O32–, SO32–, SO42–d) more than one correct responsearrow_forwardWrite a balanced chemical equation for the standard formation reaction of solid vanadium(V) oxide (v,0,). Explanation Checkarrow_forwardExercises 1. Assign an oxidation number to each species in the redox reaction below. 2 H₂O → 2 H2 + O2 2. For the reaction above, identify the following: a. Species oxidized: b. Species reduced:arrow_forward
- Te following chemical reaction takes place in aqueous solution: MnCl, (aq)+2 KOH(ag) →Mn(OH),(s)+2KCI(aq) Write the net ionic equation for this reaction. Explanation Check O2022 McGraw Hill LLC. All Rights Reservearrow_forwardEXERCISE 18.8A Calculate the values of AG° and Ke at 25 °C for the reaction 3 Mg(s) + 2 Al*(1 M) = 3 Mg²*(1 M) + 2 Al(s) 2+arrow_forwardExercise 6: Redox Reaction Balance the following redox equation in acidic medium 1. MnO + H₂C₂O ® Mn²+ + CO₂ 4 Balance the following redox reaction in basic medium 1. Zn + NO₂® Zn(OH)² + NH3arrow_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 Learning