From the given diagrams representing weak acid, the acid that has highest pH has to be identified Concept Information: Weak acid: Weak acids ionize only to limited extent in water. At equilibrium, an aqueous solution of a weak acid has a mixture of unionized acid molecules, hhydronium ions and corresponding conjugate base. pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H 3 O + ] Concentration of hydrogen ion versus pH: Higher the concentration of hydrogen ions, lower will be the pH and vice versa To Identify: The weak acid having the highest pH from the given diagrams
From the given diagrams representing weak acid, the acid that has highest pH has to be identified Concept Information: Weak acid: Weak acids ionize only to limited extent in water. At equilibrium, an aqueous solution of a weak acid has a mixture of unionized acid molecules, hhydronium ions and corresponding conjugate base. pH definition: The concentration of hydrogen ion is measured using pH scale. The acidity of aqueous solution is expressed by pH scale. The pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration. pH = -log[H 3 O + ] Concentration of hydrogen ion versus pH: Higher the concentration of hydrogen ions, lower will be the pH and vice versa To Identify: The weak acid having the highest pH from the given diagrams
Solution Summary: The author explains that the pH of the solution is inversely proportional to the concentration of hydrogen ions.
From the given diagrams representing weak acid, the acid that has highest pH has to be identified
Concept Information:
Weak acid:
Weak acids ionize only to limited extent in water. At equilibrium, an aqueous solution of a weak acid has a mixture of unionized acid molecules, hhydronium ions and corresponding conjugate base.
pH definition:
The concentration of hydrogen ion is measured using
pH scale. The acidity of aqueous solution is expressed by
pH scale.
The
pH of a solution is defined as the negative base-10 logarithm of the hydrogen or hydronium ion concentration.
pH=-log[H3O+]
Concentration of hydrogen ion versus pH:
Higher the concentration of hydrogen ions, lower will be the pH and vice versa
To Identify: The weak acid having the highest pH from the given diagrams
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
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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.
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