(a) Interpretation: The net ionic equation needs to be determined and balanced in the acidic medium. Concept introduction: The rules to balance redox reactions in basic medium are as follows: Determine the oxidation numbers of the elements and write the oxidation and reduction half equation. Balance the atoms of elements other than H and O atoms. Use H 2 O to balance the number of O atoms, H+ to balance the number of H atoms and the electrons for charge balance. Equalize the number of electrons on both the half reactions and then add the half reactions.
(a) Interpretation: The net ionic equation needs to be determined and balanced in the acidic medium. Concept introduction: The rules to balance redox reactions in basic medium are as follows: Determine the oxidation numbers of the elements and write the oxidation and reduction half equation. Balance the atoms of elements other than H and O atoms. Use H 2 O to balance the number of O atoms, H+ to balance the number of H atoms and the electrons for charge balance. Equalize the number of electrons on both the half reactions and then add the half reactions.
Solution Summary: The author explains how the net ionic equation must be determined and balanced in the acidic medium.
Method Method Redox reactions are generally balanced using two processes. The first method is based on the redox reaction’s division into two reactions where one is involved in oxidation and the other in reduction (half reaction method) and the second one is based on the reducing and oxidizing molecule’s oxidation number variation (oxidation number method).
Chapter 17, Problem 10QAP
Interpretation Introduction
(a)
Interpretation:
The net ionic equation needs to be determined and balanced in the acidic medium.
Concept introduction:
The rules to balance redox reactions in basic medium are as follows:
Determine the oxidation numbers of the elements and write the oxidation and reduction half equation.
Balance the atoms of elements other than H and O atoms. Use H2 O to balance the number of O atoms, H+ to balance the number of H atoms and the electrons for charge balance. Equalize the number of electrons on both the half reactions and then add the half reactions.
Interpretation Introduction
(b)
Interpretation:
The net ionic equation needs to be determined and balanced in the acidic medium.
Concept introduction:
The rules to balance redox reactions in basic medium are as follows:
Determine the oxidation numbers of the elements and write the oxidation and reduction half equation.
Balance the atoms of elements other than H and O atoms. Use H2 O to balance the number of O atoms, H+ to balance the number of H atoms and the electrons for charge balance. Equalize the number of electrons on both the half reactions and then add the half reactions.
Interpretation Introduction
(c)
Interpretation:
The net ionic equation needs to be determined and balanced in the acidic medium.
Concept introduction:
The rules to balance redox reactions in basic medium are as follows:
Determine the oxidation numbers of the elements and write the oxidation and reduction half equation.
Balance the atoms of elements other than H and O atoms. Use H2 O to balance the number of O atoms, H+ to balance the number of H atoms and the electrons for charge balance. Equalize the number of electrons on both the half reactions and then add the half reactions.
Protecting Groups and Carbonyls
6) The synthesis generates allethrolone that exhibits high insect toxicity but low mammalian toxicity. They are used in pet
shampoo, human lice shampoo, and industrial sprays for insects and mosquitos. Propose detailed mechanistic steps to
generate the allethrolone label the different types of reagents (Grignard, acid/base protonation, acid/base deprotonation,
reduction, oxidation, witting, aldol condensation, Robinson annulation, etc.)
III + VI
HS
HS
H+
CH,CH,Li
III
I
II
IV
CI + P(Ph)3
V
༼
Hint: no strong base added
VI
S
VII
IX
HO
VIII
-MgBr
HgCl2,HgO
HO.
isomerization
aqeuous solution
H,SO,
༽༽༤༽༽
X
MeOH
Hint: enhances selectivity for reaction at the S
X
☑