
(a)
Interpretation:
Three
Concept introduction:
The reaction in which both oxidation and reduction reaction occur simultaneously is called a redox reaction. According to the law of conservation of mass, the mass of all the species in a reaction must be balanced. Therefore balancing is necessary to conserve the mass and even the charge must be balanced to maintain the overall charge of the reaction.
(a)

Answer to Problem 32E
The balanced equations are as follows,
Explanation of Solution
The balanced equation is defined as follows,
The reduction half cell reaction is,
The change in the oxidation number of chromium is from
The oxidation half reaction is,
The change in oxidation number of chromium is from zero to
As the atoms other than hydrogen and oxygen are already balanced, so directly balance the oxygen atom in the reduction half reaction by adding water to right hand side,
Balance the hydrogen atoms in the reduction half reaction by adding
Balance the charge by adding appropriate number of electrons to the left hand side,
As the atoms other than hydrogen and oxygen are already balanced in the oxidation half reaction. Therefore directly balance the oxygen by adding water molecule to the left hand side.
Balance the hydrogen atoms by adding
Balance the charge by adding electrons to the right hand side,
Add the oxidation and reduction half reaction,
Cancel similar terms on both the sides,
To balance the reaction in basic medium,
The final equation is,
(b)
Interpretation:
Three oxidation-reduction reactions are given. The balancing of all the reactions in basic media using half-reaction method is to be done.
Concept introduction:
The reaction in which both oxidation and reduction reaction occur simultaneously is called a redox reaction. According to the law of conservation of mass, the mass of all the species in a reaction must be balanced. Therefore balancing is necessary to conserve the mass and even the charge must be balanced to maintain the overall charge of the reaction.
(b)

Answer to Problem 32E
The balanced equations are as follows,
Explanation of Solution
The balanced equation is defined as follows,
The reduction half cell reaction is,
The change in the oxidation number of manganese is from
The oxidation half reaction is,
The change in oxidation number of sulphur is from
Balance all the atoms except hydrogen and oxygen in the reduction half reaction,
Balance the oxygen atoms by adding water molecules to the right hand side,
Balance the hydrogen atoms by adding
Balance the charge by adding appropriate number of electrons to the left hand side,
All the atoms except hydrogen and oxygen are already balanced and there is no hydrogen or oxygen atom in the reaction. So, directly balance the charge by adding appropriate number of electrons.,
Multiply equation (3) by
Cancel similar terms on both the sides,
In basic medium,
Simplify the equation,
(c)
Interpretation:
Three oxidation-reduction reactions are given. The balancing of all the reactions in basic media using half-reaction method is to be done.
Concept introduction:
The reaction in which both oxidation and reduction reaction occur simultaneously is called a redox reaction. According to the law of conservation of mass, the mass of all the species in a reaction must be balanced. Therefore balancing is necessary to conserve the mass and even the charge must be balanced to maintain the overall charge of the reaction.
(c)

Answer to Problem 32E
The balanced equations are as follows,
Explanation of Solution
The balanced equation is defined as follows,
The reduction half cell reaction is,
The change in the oxidation number of manganese is from
The oxidation half reaction is,
The change in the oxidation number of carbon is from
All the elements except hydrogen and oxygen are already balanced so directly balance the oxygen in the reduction half reaction by adding water to right hand side,
Balance the hydrogen atoms in the reduction half reaction by adding
Balance the charge by adding appropriate number of electrons to the left hand side,
All the atoms except hydrogen and oxygen in oxidation half reaction are already balanced. So, directly balance oxygen atom by adding water molecule to the left hand side,
Balance the hydrogen atom by adding
Balance the charge by adding electrons to the right hand side,
Multiply equation (6) by
Cancel similar terms on both the sides,
In basic medium,
The final equation is,
Want to see more full solutions like this?
Chapter 17 Solutions
Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
- Interpreting NMR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of NMR spectra. Beyond Labz Organic Synthesis and Organic Qualitative Analysis have spectral libraries containing over 700 1H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: Question 2 Question 3 2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled**arrow_forward11:14 ... worksheets.beyondlabz.com 3. To check your predictions, click this link for Interpreting NMR Spectra 1. You will see a list of all the - compounds in the spectra library in alphabetical order by IUPAC name. Hovering over a name in the list will show the structure on the chalkboard. The four buttons on the top of the Spectra tab in the tray are used to select the different spectroscopic techniques for the selected compound. Make sure the NMR button has been selected. 4. Scroll through the list of names to find the names for the two compounds you have been given and click on the name to display the NMR spectrum for each. In the NMR tables below, list the chemical shift, the splitting, and the number of hydrogens associated with each peak for each compound. Compare your answers to your predictions. **Not all slots must be filled** Peak Chemical Shift (d) Multiplicity 1 2 3 4 5arrow_forwardО δα HO- H -Br δα HO-- + + -Br [B] 8+ HO- -Br δα नarrow_forward
- 1/2 - 51% + » GAY Organic Reactions Assignment /26 Write the type of reaction that is occurring on the line provided then complete the reaction. Only include the major products and any byproducts (e.g. H₂O) but no minor products. Please use either full structural diagrams or the combination method shown in the lesson. Skeletal/line diagrams will not be accepted. H3C 1. 2. CH3 A Acid OH Type of Reaction: NH Type of Reaction: + H₂O Catalyst + HBr 3. Type of Reaction: H3C 4. Type Reaction: 5. H3C CH2 + H2O OH + [0] CH3 Type of Reaction: 6. OH CH3 HO CH3 + Type of Reaction: 7. Type of Reaction: + [H]arrow_forwardhumbnai Concentration Terms[1].pdf ox + New Home Edit Sign in Comment Convert Page Fill & Sign Protect Tools Batch +WPS A Free Trial Share Inter Concreting Concentration forms. Hydrogen peroxide is a powerful oxidizing agent wed in concentrated solution in rocket fuels and in dilute solution as a hair bleach. An aqueous sulation of H2O2 is 30% by mass and has density of #liligime calculat the Ⓒmolality ⑥mole fraction of molarity. 20 9. B. A sample of Commercial Concentrated hydrochloric ETarrow_forwardIf a reaction occurs, what would be the major products? Please include a detailed explanation as well as a drawing showing how the reaction occurs and what the final product is.arrow_forward
- Would the following organic synthesis occur in one step? Add any missing products, required catalysts, inorganic reagents, and other important conditions. Please include a detailed explanation and drawings showing how the reaction may occur in one step.arrow_forward(a) Sketch the 'H NMR of the following chemical including the approximate chemical shifts, the multiplicity (splitting) of all signals and the integration (b) How many signals would you expect in the 13C NMR? CH3arrow_forwardDraw the Show the major and minor product(s) for the following reaction mechanisms for both reactions and show all resonance structures for any Explain why the major product is favoured? intermediates H-Brarrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning





