Just as individual bonds in a molecule are often polar, molecules as a whole are also often polar because of the netsum of individual bond polarities. There are three possiblestructures for substances with the formula C 2 H 2 Cl 2 , two ofwhich are polar overall and one of which is not. (a) Draw the three possible structures for C 2 H 2 Cl 2 , predictan overall shape for each, and explain how they differ. (b) Which of the three structures is non polar, and which two are polar? Explain. (c) Two of the three structures can be inter converted by aprocess called cis−trans isomerization, in which rotation around the central carbon—carbon bond takes place when the molecules are irradiated with ultraviolet light. If light with a wavelength of approximately 200 nm is required for isomerization, how much energy in kJ/mol is involved? (d) Sketch the orbitals involved in the central carbon-carbon bond, and explain why so much energy is necessary for bond rotation to occur.
Just as individual bonds in a molecule are often polar, molecules as a whole are also often polar because of the netsum of individual bond polarities. There are three possiblestructures for substances with the formula C 2 H 2 Cl 2 , two ofwhich are polar overall and one of which is not. (a) Draw the three possible structures for C 2 H 2 Cl 2 , predictan overall shape for each, and explain how they differ. (b) Which of the three structures is non polar, and which two are polar? Explain. (c) Two of the three structures can be inter converted by aprocess called cis−trans isomerization, in which rotation around the central carbon—carbon bond takes place when the molecules are irradiated with ultraviolet light. If light with a wavelength of approximately 200 nm is required for isomerization, how much energy in kJ/mol is involved? (d) Sketch the orbitals involved in the central carbon-carbon bond, and explain why so much energy is necessary for bond rotation to occur.
Solution Summary: The author explains that the three possible structures for C_Text2 H[Cl]] are drawn and the overall shape for each with a difference needs to
Just as individual bonds in a molecule are often polar, molecules as a whole are also often polar because of the netsum of individual bond polarities. There are three possiblestructures for substances with the formula
C
2
H
2
Cl
2
, two ofwhich are polar overall and one of which is not. (a) Draw the three possible structures for
C
2
H
2
Cl
2
, predictan overall shape for each, and explain how they differ. (b) Which of the three structures is non polar, and which two are polar? Explain. (c) Two of the three structures can be inter converted by aprocess called cis−trans isomerization, in which rotation around the central carbon—carbon bond takes place when the molecules are irradiated with ultraviolet light. If light with a wavelength of approximately 200 nm is required for isomerization, how much energy in kJ/mol is involved? (d) Sketch the orbitals involved in the central carbon-carbon bond, and explain why so much energy is necessary for bond rotation to occur.
EEZE
LETCHUP
ID
Draw the most likely conjugate base resulting from this acid-base reaction.
Include all lone pairs. Ignore inorganic byproducts.
Drawing
く
NaOCH2CH3
:0:
:0:
狗
Answer
2. Provide a clear arrow-pushing mechanism for the following reactions. Do not skip proton
transfers, do not combine steps, and make sure your arrows are clear enough to be interpreted
without ambiguity.
a.
CH3
Ph
OEt
هد
Ph
CH3
Hint: the species on the left is an ynolate, which behaves a lot like an enolate.
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