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2. Using the graph below, determine the pK, K, and concentration of the acid if 25...
Using this titration graph (pH vs. base volume added), find the unknown Amino Acid and show...
Using this titration graph (pH vs. base volume added), find the
unknown Amino Acid and show its pK1, pK2 and pI.
Unknown #3 buffer-pH vs. mL 0.5M NaOH 12 10 6 4 0 10 15 20 25 30 Volume of 0.5M NaOH (mL)
3. Pyruvic acid, C- , is a monoprotic acid with K. = 3.3 x 10-3 and...
3. Pyruvic acid, C- , is a monoprotic acid with K. = 3.3 x 10-3 and pk, = 2.48. In H. C OH a titration experiment, pyruvic acid (0.090 M, 50.00 mL) was titrated with NaOH (0.108 M). Find the pH (a) Before any NaOH is added. (b) After 5, 10, 20, 30 and 40 mL of NaOH are added. (c) At the equivalence point. (d) And after 10 mL excess NaOH is added.
A beaker contains a 25 mL solution of an unknown monoprotic acid that reacts in a...
A beaker contains a 25 mL solution of an unknown monoprotic acid that reacts in a 1:1 stochiometric ratio with NaOH. Titrate the solution with NaOH to determine the concentration of the acid. Perform a titration by setting the concentration of the NaOH solution and adding it to the acid solution using the different Add Base buttons. The equivalence point of the titration is passed when the solution color changes. The unknown sample can be titrated multiple times by pressing...
3. A titration curve and a first derivative graph are given on the next page for...
3. A titration curve and a first derivative graph are given on the next page for the titration of a weak base with HCL Use these graphs to answer parts (a)- (c). a. Calculate the initial molarity of B. b. Determine the pK for B at 20.0°C. Show your work on the graph and in the space below. Based on your answer to (b), which base (ammonia, methylamine, or morpholine) was titrated with HCI? c d. Calculate K for the...
Lab 8: Identification of an Unknown Acid using Titrimetry A student set up a titration apparatus...
Lab 8: Identification of an Unknown Acid using Titrimetry A student set up a titration apparatus that involved using 25.9 mL of 1.57 M acetic acid. The acetic acid was titrated with 0.154 M NaOH. What is the pH of the titration solution after 2.19 mL of the NaOH was added if the K, of acetic acid is 1.8 x 10$? Show all work for full points!
An unknown acid is titrated with a strong base (NaOH) to produce the above titration curve....
An unknown acid is titrated with a strong base (NaOH) to produce
the above titration curve. Key points on this graph reveal
important information about the substance and the solution created
with it.
What volume of NaOH is needed to reach the equivalence point
(the point where you added equal moles of NaOH to the
acid)? Select one of the following : ["10 mL", "5
mL", "20 mL", "30 mL", "40 mL", "25 mL", "15 mL", "35 mL"]
...
1) A solution of a weak monoprotic acid of unknown concentration was titrated with 0.23 M...
1) A solution of a weak monoprotic acid of unknown concentration was titrated with 0.23 M NaOH. If a 100.-mL sample of the acid solution required exactly 10. mL of the NaOH solution to reach the equivalence point, what was the original concentration of the weak acid? 2) During the titration on problem (2B), after 5.0 mL of NaOH addition, the pH = 3.68. What is the Ka of the weak acid? please show steps i have an exam tomorrow
Use titration to determine the molar concentration of an unknown solution Question Calculate the molar concentratio...
Use titration to determine the molar concentration of an unknown solution Question Calculate the molar concentration for H, SO, in the following situation. When 54 ml of it was completely titrated by 25 ml of 1.2 M NaOH, 1 mol of acid was titrated by 2 mol of base. Give your answer in two significant figures. Provide your answer below: м FEEDBACK
millimoles of NaOH titrant Chemical Equilibria: K, of a Weak Monoprotic Acid Report Form Name: Partner's...
millimoles of NaOH titrant
Chemical Equilibria: K, of a Weak Monoprotic Acid Report Form Name: Partner's Name: (if any) Lab Section MWITTHM-TH (Circle) Data and Calculations 1. Measurement of pH and titration of acetic acid solution Concentration of standardized NaOH titrant 0.1054 Mass concentration of acetic acid 2.40 - mol/L Trial 3 Measured pH of the acetic acid solution Mass of acetic acid solution taken for titration Trial 1 3.09 20.16 0 11.4 Trial 2 3.32 30.06 Initial buret reading...
HELP! Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration...
HELP!
Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration of NaOH (mol/L) from bottle: 0.1053 Mass concentration of unknown acid (g/L) from bottle: 3.120 pH of unknown acid solution: 228 from pH meter. 1) Titration of unknown acid using indicator only Trial 2 Trial 1 1.593 30.851 090909 ml Mass of empty beaker Mass of beaker + unknown acid solution Mass of unknown acid solution Volume of unknown acid solution Initial volume of...
Using this titration graph (pH vs. base volume added), find the
unknown Amino Acid and show its pK1, pK2 and pI.
Unknown #3 buffer-pH vs. mL 0.5M NaOH 12 10 6 4 0 10 15 20 25 30 Volume of 0.5M NaOH (mL)
3. Pyruvic acid, C- , is a monoprotic acid with K. = 3.3 x 10-3 and pk, = 2.48. In H. C OH a titration experiment, pyruvic acid (0.090 M, 50.00 mL) was titrated with NaOH (0.108 M). Find the pH (a) Before any NaOH is added. (b) After 5, 10, 20, 30 and 40 mL of NaOH are added. (c) At the equivalence point. (d) And after 10 mL excess NaOH is added.
3. A titration curve and a first derivative graph are given on the next page for the titration of a weak base with HCL Use these graphs to answer parts (a)- (c). a. Calculate the initial molarity of B. b. Determine the pK for B at 20.0°C. Show your work on the graph and in the space below. Based on your answer to (b), which base (ammonia, methylamine, or morpholine) was titrated with HCI? c d. Calculate K for the...
Lab 8: Identification of an Unknown Acid using Titrimetry A student set up a titration apparatus that involved using 25.9 mL of 1.57 M acetic acid. The acetic acid was titrated with 0.154 M NaOH. What is the pH of the titration solution after 2.19 mL of the NaOH was added if the K, of acetic acid is 1.8 x 10$? Show all work for full points!
An unknown acid is titrated with a strong base (NaOH) to produce
the above titration curve. Key points on this graph reveal
important information about the substance and the solution created
with it.
What volume of NaOH is needed to reach the equivalence point
(the point where you added equal moles of NaOH to the
acid)? Select one of the following : ["10 mL", "5
mL", "20 mL", "30 mL", "40 mL", "25 mL", "15 mL", "35 mL"]
...
Use titration to determine the molar concentration of an unknown solution Question Calculate the molar concentration for H, SO, in the following situation. When 54 ml of it was completely titrated by 25 ml of 1.2 M NaOH, 1 mol of acid was titrated by 2 mol of base. Give your answer in two significant figures. Provide your answer below: м FEEDBACK
millimoles of NaOH titrant
Chemical Equilibria: K, of a Weak Monoprotic Acid Report Form Name: Partner's Name: (if any) Lab Section MWITTHM-TH (Circle) Data and Calculations 1. Measurement of pH and titration of acetic acid solution Concentration of standardized NaOH titrant 0.1054 Mass concentration of acetic acid 2.40 - mol/L Trial 3 Measured pH of the acetic acid solution Mass of acetic acid solution taken for titration Trial 1 3.09 20.16 0 11.4 Trial 2 3.32 30.06 Initial buret reading...
HELP!
Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration of NaOH (mol/L) from bottle: 0.1053 Mass concentration of unknown acid (g/L) from bottle: 3.120 pH of unknown acid solution: 228 from pH meter. 1) Titration of unknown acid using indicator only Trial 2 Trial 1 1.593 30.851 090909 ml Mass of empty beaker Mass of beaker + unknown acid solution Mass of unknown acid solution Volume of unknown acid solution Initial volume of...
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