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(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)
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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)
![Check Mark](/static/check-mark.png)
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)
![Check Mark](/static/check-mark.png)
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,
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Chapter 17 Solutions
Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
- 2. 200 LOD For an unknown compound with a molecular ion of 101 m/z: a. Use the molecular ion to propose at least two molecular formulas. (show your work) b. What is the DU for each of your possible formulas? (show your work) C. Solve the structure and assign each of the following spectra. 8 6 4 2 (ppm) 150 100 50 ō (ppm) 4000 3000 2000 1500 1000 500 HAVENUMBERI-11arrow_forwardComplete the spectroscopy with structurearrow_forwardComplete the spectroscopy with structurearrow_forward
- Given the following concentrations for a system, calculate the value for the reaction quotient: Cl2(g)+ CS2(g) ⇌ CCl4(g)+ S2Cl2(g) Cl2 = 31.1 atm CS2 = 91.2 atm CCl4 = 2.12 atm S2Cl2 = 10.4 atmarrow_forwardMatch each chemical or item with the proper disposal or cleanup mwthod, Not all disposal and cleanup methods will be labeled. Metal sheets C, calcium, choroide solutions part A, damp metal pieces Part B, volumetric flask part A. a.Return to correct lables”drying out breaker. Place used items in the drawer.: Rinse with deionized water, dry as best you can, return to instructor. Return used material to the instructor.: Pour down the sink with planty of running water.: f.Pour into aqueous waste container. g.Places used items in garbage.arrow_forwardWrite the equilibrium constant expression for the following reaction: HNO2(aq) + H2O(l) ⇌ H3O+(aq) + NO2-(aq)arrow_forward
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