The following structure is a representation of the organophosphate insecticide diazinon. Only the connections between atoms are shown; multiple bonds are not indicated. Give the formula of diazinon, and complete the structure by showing where the multiple bonds and lone pairs are located. ( Red = O , gray = C , yellow = S , blue = N , ivory = H , purple = P . ) (Hint: There is a double bond between phosphorus and sulfur.)
The following structure is a representation of the organophosphate insecticide diazinon. Only the connections between atoms are shown; multiple bonds are not indicated. Give the formula of diazinon, and complete the structure by showing where the multiple bonds and lone pairs are located. ( Red = O , gray = C , yellow = S , blue = N , ivory = H , purple = P . ) (Hint: There is a double bond between phosphorus and sulfur.)
Solution Summary: The author explains that the formula of diazinon should be completed by showing where the multiple bonds and lone pairs are located.
The following structure is a representation of the organophosphate insecticide diazinon. Only the connections between atoms are shown; multiple bonds are not indicated. Give the formula of diazinon, and complete the structure by showing where the multiple bonds and lone pairs are located.
(
Red
=
O
,
gray
=
C
,
yellow
=
S
,
blue
=
N
,
ivory
=
H
,
purple
=
P
.
)
(Hint: There is a double bond between phosphorus and sulfur.)
Acetic acid is added to DI water at an initial concentration of 10 -6 M (Ka=1.8x10-5)
A. Using the "ICE" Method, what would the pH be at equilibrium? State assumptions and show your
work.
B. Using the simultaneous equations method, what would the pH be at equilibrium? Show your work
1. Show that the change in entropy for a fixed amount of ideal gas held at a constant
temperature undergoing a volume change is given by the simple equation
AS = NkB In
Hint: Start with the equation
M
dS =
du + (Œ) dv - Ž (#) an,
dU
du+av-dN;
j=1
Why doesn't the equation for the entropy of an ideal gas depend on the strength of the
intermolecular forces for the gas?
2. Make an ice cube at 1 bar pressure by freezing an amount of liquid water that is 2
cm x 2 cm x 2 cm in volume. The density of liquid water at 0 °C is 1.000 g cm³ and the
density of ice at 0 °C is 0.915 g cm³. Note that this difference in density is the reason
your water pipes burst if they freeze and why you shouldn't forget to take your bottle of
pop out of the freezer if you put it in there to try and cool it down faster.
A. What is the work of expansion upon freezing?
B. Is work done on the system or by the system?
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