If I go from a 30/70 methanol/formic acid solvent to a 90/10 methanol/ formic acid solvent...
If I go from a 30/70 methanol/formic acid solvent to a 90/10 methanol/ formic acid solvent is my solvent becoming more polar or more non polar? How does this solvent affect the seperation of esters in a solution?
Homework Answers
The polarity of formic acid is higher than methanol. Hence with decrease in the composition of formic acid in the mixture decreases the polarity of the solvent. Since the polarity decreased, the seperation of esters in a solution increased.
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If I go from a 30/70 methanol/formic acid solvent to a 90/10
methanol/ formic acid solvent...
Rank the following compounds [Benzophenone, Malonic Acid, and Biphenyl] from least polar to most polar, and...
Rank the following compounds [Benzophenone, Malonic Acid, and Biphenyl] from least polar to most polar, and how does the polarity of a solute affect its ability to dissolve in a polar or non polar solvent?
The following data have been obtained for the effect of solvent composition on the solubility of...
The following data have been obtained for the effect of solvent composition on the solubility of serine, an amino acid, at 10.0 oC. Volume % Methanol 0 10 20 30 40 60 80 100 Solubility (g/100 mL solvent) 22.72 18.98 11.58 6.415 4.205 1.805 0.85 0.65 Solution Density (g/mL) 1.00 0.98 0.97 0.95 0.94 0.91 0.88 0.79 The data were obtained by mixing known volumes of methanol and water to obtain the desired solvent compositions, and then slowly adding measured...
The follwoign data have been obtained for the effect of solvent composition on the solubility of...
The follwoign data have been obtained for the effect of solvent composition on the solubility of a serine, an amino acid, at 10.0 degrees C: Volume % Methanol 0 10 20 30 40 60 80 100 Solubility (g/100mL solvent) 22.72 18.98 11.58 6.415 4.205 1.805 0.85 0.65 Solution Density (g/mL) 1.00 0.98 0.97 0.95 0.94 0.91 0.88 0.79 The data were obtained by mixing known volumes of methanol and water to obtain the desired solven compositions and then slowly adding...
QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a...
QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4)
with a pH = 4.00, what ratio of formic acid to sodium formate is
required? (Notice that I am asking for the ratio of acid to base,
not base to acid!)
a) 1.25
b) 0.56
c) 0.82
d) 1.87
QUESTION 4 If you find that you need an acid to base ratio of
4.23 and you are using 50.00mL of a 1.00M acid solution, what
volume...
4. Formic acid, HFor, has a Ka value of 1.8 × 10 -4 . A student...
4. Formic acid, HFor, has a Ka value of 1.8 × 10 -4 . A student is asked to prepare a buffer having a pH of 3.40 from a solution of formic acid and a solution of sodium formate having the same molarity. How many milliliters of the NaFor solution should she add to 20 mL of the HFor solution to make the buffer? 5. How many mL of 0.10 M NaOH should the student add to 20 mL 0.10...
3. Formic acid, HCOOH, is a weak acid with a pK, of 3.74. Draw up a...
3. Formic acid, HCOOH, is a weak acid with a pK, of 3.74. Draw up a reaction table for the reaction of 0.300 M formic acid with water, and calculate the pH of this solution. 4. Consider the following gas-phase equilibrium reaction: N(g) O,(g)2NOg K, 4.10x 10 at 2000°C If 1.0 mol of NO is introduced into a 1.0 L container at 2000 C, what is the concentration of NO when equilibrium is reached? 5. Consider the equilibrium Predict and...
with at least 10 data points choose a weak acid (such as formic acid, acetic acid,...
with at least 10 data points
choose a weak acid (such as formic acid, acetic acid, benzoic acid) and calculate/plot a titration curve for a 0.1 M solution of this acid with strong base using Excel. Do the same for a weak base (ammonia, TRIS) titrated with strong acid Prepare a titration curve (pH vs. equivalents strong base added if you choose a weak acid to be titrated) in which you plot at least 10 data points starting from 0-equiv...
1. a)Calculate the pH of a 0.30M formic acid solution (Ka=1.8*10^-4)Weak monoprotic acid. b)Calculate the Ka...
1. a)Calculate the pH of a 0.30M formic acid solution (Ka=1.8*10^-4)Weak monoprotic acid. b)Calculate the Ka for a 0.050M solution of HA (weak avid if the pH=4.65 c)What is the pH of the solution which results from mixing 50.0mL of 0.30M HF (aq) and 50.0mL of 0.30M NaOH (aq) at 25C? (Kb of F- =1.4*10^-11) I am having a hard time with these so as much detail as possible would be great, thank you for your time and your help.
1. In order for a solution to generate heat when irradiated by microwaves the solvent must...
1. In order for a solution to generate heat when irradiated by
microwaves the solvent must have?
2. Identify what the solvent is for this reaction. Draw its
structure.
cetyl anthranilic acid into a large, dry, test tube place 0.68 g of anthranilic acid, 2.2 mL of acetic anhydride and a Doung chip. Upon the addition of the acetic anhydride the tube may become warm. Swirl the tubo brany to mix the reagents. Place the tube into a beaker. Place...
C. Determining Rr Value for Non-Polar Solvent System The information from the above solvent syste...
CAN YOU PLEASE ANSWER AS SOON AS POSSIBLE THANK
YOU
C. Determining Rr Value for Non-Polar Solvent System The information from the above solvent systems (Part A) can be used to compare the relative polarities of different functional groups. Select the best solvent system above for the set of compounds in each test below to use for your comparisons. When you are done, use your work to list the functional groups in order of increasing polarity E + Solvent foballtut,...
QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4)
with a pH = 4.00, what ratio of formic acid to sodium formate is
required? (Notice that I am asking for the ratio of acid to base,
not base to acid!)
a) 1.25
b) 0.56
c) 0.82
d) 1.87
QUESTION 4 If you find that you need an acid to base ratio of
4.23 and you are using 50.00mL of a 1.00M acid solution, what
volume...
3. Formic acid, HCOOH, is a weak acid with a pK, of 3.74. Draw up a reaction table for the reaction of 0.300 M formic acid with water, and calculate the pH of this solution. 4. Consider the following gas-phase equilibrium reaction: N(g) O,(g)2NOg K, 4.10x 10 at 2000°C If 1.0 mol of NO is introduced into a 1.0 L container at 2000 C, what is the concentration of NO when equilibrium is reached? 5. Consider the equilibrium Predict and...
with at least 10 data points
choose a weak acid (such as formic acid, acetic acid, benzoic acid) and calculate/plot a titration curve for a 0.1 M solution of this acid with strong base using Excel. Do the same for a weak base (ammonia, TRIS) titrated with strong acid Prepare a titration curve (pH vs. equivalents strong base added if you choose a weak acid to be titrated) in which you plot at least 10 data points starting from 0-equiv...
1. In order for a solution to generate heat when irradiated by
microwaves the solvent must have?
2. Identify what the solvent is for this reaction. Draw its
structure.
cetyl anthranilic acid into a large, dry, test tube place 0.68 g of anthranilic acid, 2.2 mL of acetic anhydride and a Doung chip. Upon the addition of the acetic anhydride the tube may become warm. Swirl the tubo brany to mix the reagents. Place the tube into a beaker. Place...
CAN YOU PLEASE ANSWER AS SOON AS POSSIBLE THANK
YOU
C. Determining Rr Value for Non-Polar Solvent System The information from the above solvent systems (Part A) can be used to compare the relative polarities of different functional groups. Select the best solvent system above for the set of compounds in each test below to use for your comparisons. When you are done, use your work to list the functional groups in order of increasing polarity E + Solvent foballtut,...
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