Consider the equilibrium 4 NO 2 ( g ) + 6 H 2 O ( g ) ⇌ 4 NH 3 ( g ) + 7 O 2 ( g ) (a) What is the expression for the equilibrium constant ( K c ) of the reaction? (b) How must the concentration of NH 3 change to reach equilibrium if the reaction quotient is less than the equilibrium constant? (c) If the reaction were at equilibrium, how would a decrease in pressure (from an increase in the volume of the reaction vessel) affect the pressure of NO 2 ? (d) If the change in the pressure of NO 2 is 28 torr as a mixture 0f the four gases reaches equilibrium, how much will the pressure of O 2 change?
Consider the equilibrium 4 NO 2 ( g ) + 6 H 2 O ( g ) ⇌ 4 NH 3 ( g ) + 7 O 2 ( g ) (a) What is the expression for the equilibrium constant ( K c ) of the reaction? (b) How must the concentration of NH 3 change to reach equilibrium if the reaction quotient is less than the equilibrium constant? (c) If the reaction were at equilibrium, how would a decrease in pressure (from an increase in the volume of the reaction vessel) affect the pressure of NO 2 ? (d) If the change in the pressure of NO 2 is 28 torr as a mixture 0f the four gases reaches equilibrium, how much will the pressure of O 2 change?
4
NO
2
(
g
)
+
6
H
2
O
(
g
)
⇌
4
NH
3
(
g
)
+
7
O
2
(
g
)
(a) What is the expression for the equilibrium constant (Kc) of the reaction?
(b) How must the concentration of NH3 change to reach equilibrium if the reaction quotient is less than the equilibrium constant?
(c) If the reaction were at equilibrium, how would a decrease in pressure (from an increase in the volume of the reaction vessel) affect the pressure of NO2?
(d) If the change in the pressure of NO2 is 28 torr as a mixture 0f the four gases reaches equilibrium, how much will the pressure of O2 change?
Draw a structure using wedges and dashes for the following compound:
H-
Et
OH
HO-
H
H-
Me
OH
Which of the following molecules are NOT typical carbohydrates? For the molecules that are
carbohydrates, label them as an aldose or ketose.
HO
Он
ОН ОН
Он
ОН
но
ΤΗ
HO
ОН
HO
eve
Он он
ОН
ОН
ОН
If polyethylene has an average molecular weight of 25,000 g/mol, how many repeat units
are present?
Draw the a-anomer cyclized pyranose Haworth projection of the below hexose. Circle the
anomeric carbons. Number the carbons on the Fischer and Haworth projections. Assign R
and S for each chiral center.
HO
CHO
-H
HO
-H
H-
-OH
H
-OH
CH₂OH
Draw the ẞ-anomer cyclized furanose Haworth projection for the below hexose. Circle the
anomeric carbons. Number the carbons on the Fischer and Haworth projections.
HO
CHO
-H
H
-OH
HO
-H
H
-OH
CH₂OH
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