The newly synthesized weak acid was designed for use in created buffers hat protect proteins during...
The newly synthesized weak acid was designed for use in created buffers hat protect proteins during purification. You are told to make 0.2 Liters of a 25mM solution of the weak acid with a pH of 8.5. Determine the moles of each buffering species required in the solution? (hint: you only use one pKa value)
Homework Answers
total moles of buffer = 0.2 x 25 x 10^-3 = 5 x 10^-3
pH = 8.5
pKa of HBrO = 8.55
pH = pKa + log [salt / acid]
8.5 = 8.55 + log [salt / acid]
[salt / acid] = 0.891
[salt + acid] = 0.005
0.891 acid + acid = 0.05
acid moles = 0.0264
conjugate base moles = 0.0236
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The newly synthesized weak acid was designed for use in created
buffers hat protect proteins during...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buff...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buffer solution that has a pH of 7.4. Weak acid Acetic acid Phthalic acid Dihydrogen phosphate (monobasic) Monohrogen phosphate (dibasic) Carbonic acid Citrate Dihydrogen citrate (monobasic) Monohydrogen citrate (dibasic) K. 1.8 x 10 1.3 x 10 6.2 x 10 4.8 x 10 4.6 x 10 8.4 x 10° 1.8 x 10 4.0 x 10- In your notebook, show all...
Please here is my lab questions for titration of weak acid. The questions are very short....
Please here is my lab questions for titration of weak acid. The
questions are very short. You have to determine the answers by just
looking at the graph based on the data points. Please give me the
answers of all of them. I would really appreciate. Please calculate
the molar mass question #7 as well. It will be of great help to
me.
Mass of the unknown acid: 0.2grams
Concentration of NaOH = 0.0500M
Formuld Bal pH of weak acid...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
I added everything thing. this is the lab question you need to solve. First assigned buffer...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids Hydrolysis of salt Laboratory buffers, Polyprotie acids QUESTIONS 1. The DNA strand complementary to the strand 3-GTAGCGTAT-Y' would have the sequence a SLTACOCATAT-3 b.3.CATOXICATA-S c. 3-ATGCGTATA-S" ATATGCGTAS 2. When cytosine is treated with bisulfite, the amino group is replaced with a carbonyl group. Identify the resulting base a. adenine b. guanine c uracil d. thyminee. typoxanthine 3. How many amino acids would be in...
stopн спанде Choose an appropriate weak acid and conjugate base from the list below to make 100 ml of a 0.100M buffer solution that has a pH of 7.4. Weak acid Acetic acid Phthalic acid Dihydrogen phosphate (monobasic) Monohrogen phosphate (dibasic) Carbonic acid Citrate Dihydrogen citrate (monobasic) Monohydrogen citrate (dibasic) K. 1.8 x 10 1.3 x 10 6.2 x 10 4.8 x 10 4.6 x 10 8.4 x 10° 1.8 x 10 4.0 x 10- In your notebook, show all...
Please here is my lab questions for titration of weak acid. The
questions are very short. You have to determine the answers by just
looking at the graph based on the data points. Please give me the
answers of all of them. I would really appreciate. Please calculate
the molar mass question #7 as well. It will be of great help to
me.
Mass of the unknown acid: 0.2grams
Concentration of NaOH = 0.0500M
Formuld Bal pH of weak acid...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
I added everything thing.
this is the lab question you need to solve.
First assigned buffer pH: 2.031 Second assigned buffer pH: 9.171 Available Buffer Systems (acid/ base) pka of Conjugate Acid 2.847 4.757 malonic acid/ monosodium malonate acetic acid/ sodium acetate ammonium chloride/ ammonia triethylammonium chloride/ triethylamine 9.244 10.715 1) Buffer system details: Given pH Name and volume conjugate acid Name and volume conjugate base 2) Calculations for preparation of high capacity buffer system. Introduction In this experiment, you...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids Hydrolysis of salt Laboratory buffers, Polyprotie acids QUESTIONS 1. The DNA strand complementary to the strand 3-GTAGCGTAT-Y' would have the sequence a SLTACOCATAT-3 b.3.CATOXICATA-S c. 3-ATGCGTATA-S" ATATGCGTAS 2. When cytosine is treated with bisulfite, the amino group is replaced with a carbonyl group. Identify the resulting base a. adenine b. guanine c uracil d. thyminee. typoxanthine 3. How many amino acids would be in...
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