A 1.00-L flask was filled with 2.00 moles of gaseous SO 2 and 2.00 moles of gaseous NO 2 and heated. After equilibrium was reached, it was found that 1.30 moles of gaseous NO was present. Assume that the reaction SO 2 ( g ) + NO 2 ( g ) ⇌ SO 3 ( g ) + NO ( g ) occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
A 1.00-L flask was filled with 2.00 moles of gaseous SO 2 and 2.00 moles of gaseous NO 2 and heated. After equilibrium was reached, it was found that 1.30 moles of gaseous NO was present. Assume that the reaction SO 2 ( g ) + NO 2 ( g ) ⇌ SO 3 ( g ) + NO ( g ) occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
Solution Summary: The author explains the equilibrium state of a chemical reaction, where the reactants involved in the reaction exist in concentrations having no further tendency to change.
A 1.00-L flask was filled with 2.00 moles of gaseous SO2 and 2.00 moles of gaseous NO2 and heated. After equilibrium was reached, it was found that 1.30 moles of gaseous NO was present. Assume that the reaction
SO
2
(
g
)
+
NO
2
(
g
)
⇌
SO
3
(
g
)
+
NO
(
g
)
occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
Dr. Mendel asked his BIOL 260 class what their height was and what their
parent's heights were. He plotted that data in the graph below to determine if
height was a heritable trait.
A. Is height a heritable trait? If yes, what is the heritability value? (2 pts)
B. If the phenotypic variation is 30, what is the variation due to additive alleles?
(2 pts)
Offspring Height (Inches)
75
67.5
60
52.5
y = 0.9264x + 4.8519
55
60
65
MidParent Height (Inches)
70
75
12pt v
V
Paragraph B IUA
>
AT2 v
V
Experiment:
Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below.
Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization.
Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C
Sample C-Cool the third sample in an ice-bath to 0-2 °C
Results:
weight after recrystalization and melting point temp.
A=0.624g,102-115°
B=0.765g, 80-105°
C=1.135g, 77-108
What is the percent yield of A,B, and C.
Chapter 12 Solutions
Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
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