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From the molar mass/pKa1/pKa2 values, how can I identify an unknown polyprotic acid? 217 1. Mass...
Unknown Acid Number Mass of weighing paper Mass of weighing paper and unknown acid Concentration of NaOH solution 6...
Unknown Acid Number Mass of weighing paper Mass of weighing paper and unknown acid Concentration of NaOH solution 615978 1.6610g 0.10M 24.5481 12. 2674 m2 4.91 Volume of NaOH to reach the equivalence point Volume of NaOH at half of the equivalence point pH at half of the equivalence point CALCULATIONS Show all calculations. Mass of unknown acid •5013g Moles of NaOH to reach equivalence point .602453 mol Moles of unknown acid Molar mass (equivalent mass) of unknown acid pKa...
work check and help with the last question. pka2 is more accurate than pka1. 58 5....
work check and help with the last question. pka2 is more accurate
than pka1.
58 5. Calculation of molar mass: Use class-average NaOH molarity and your part B data. (Be sure this calculation is consistent with your choice reported in #1 and 2 above.) 6. Complete the following table, having consulted a table of diprotic acids; taking into account molar mass and pKa's, identify your unknown: I Molar mass pKa1 pKa2 From titration data Data from reference | 6-1 Unknown:...
Trying to determine the molar weight and PKa values for an unknown diprodic acid. I have...
Trying to determine the molar weight and PKa values for an unknown
diprodic acid.
I have .9010 molar NAOH titrant I have a mass of Unknown acid
being .1101 g. Equivalence point of Steepest point on graph equals
22.5mL NAOH. Equivalence OH- is 2.027×10^ -2
moles.
question---I need help to convert moles of OH ion added to
initial moles diprotic acid H2A PH 12Approximately pka1 is
approximately 3.5 at 6.25 mL OH.
data-
NaOHmL / PH 2.5 3 3.50 7.50...
What is a polyprotic acid? 2. How many moles of H3O + are present in 50...
What is a polyprotic acid? 2. How many moles of H3O + are present in 50 mL of 0.3 M H2SO4? 4. If 20.20 mL of 0.122 M NaOH are required to reach the first equivalence point of a solution of citric acid (H3C6H5O7), how many mL of NaOH are required to completely neutralize this solution? 5. If the pH at one-half of the neutralization points of a dibasic acid is 3.52 and 6.31 respectively, what are the values for...
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...
1. Use the data given to calculate the following parts: a. Using your data for the...
1. Use the data given to calculate the following parts:
a. Using your data for the value for VEP1, calculate the
molarity of H3PO4 at the 1st equivalence point, EP1. Show work
clearly, with units and correct significant figures.
b. Using your data for the value for VEP2, calculate the
molarity of H3PO4 at the 2nd equivalence point, EP2. Show work
clearly, with units and correct significant figures.
c. Calculate the percent error between these two molarity
values, % error...
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...
molariity of NaOH is 0.09591 M Font 1.1. Paragraph 4.1 .5. 1. .2 . 1.1 ...6...
molariity of NaOH is 0.09591 M
Font 1.1. Paragraph 4.1 .5. 1. .2 . 1.1 ...6 Table 1. Raw Data Trial 1 Trial 2 unknown acid un acid mass of unknown acid transferred to beaker(@) 0.589 0.556 concentration of NaOH titrant solution (M) equivalence point volume of NaOH titrant (mL) 26.67 ml 26.16 ml half-equivalence point volume of NaOH titrant (mL) 13.84 ml 13.08 ml half-equivalence point pH 4.91 pH 5.14 pH 1. Calculate the moles of NaOH delivered at...
A 0.155 g sample of a diprotic acid of unknown molar mass is dissolved in water...
A 0.155 g sample of a diprotic acid of unknown molar mass is dissolved in water and titrated with 0.1268 M NaOH. The equivalence point is reached after adding 13.2 mL of base. What is the molar mass of the unknown acid?
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code...
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code of unknown weak acid concentration of NaOH solution, M mass of weighing paper plus unknown acid, g mass of weighing paper, g final buret reading, mL initial buret reading, mL 2.0506M 2.0 Ill. Titrating the Unknown Acid identification code of unknown weak acid concentration of NaOH solution, M 500M determination 1 determination 2 LGS G mass of weighing paper plus unknown acid, g mass of weighing...
Unknown Acid Number Mass of weighing paper Mass of weighing paper and unknown acid Concentration of NaOH solution 615978 1.6610g 0.10M 24.5481 12. 2674 m2 4.91 Volume of NaOH to reach the equivalence point Volume of NaOH at half of the equivalence point pH at half of the equivalence point CALCULATIONS Show all calculations. Mass of unknown acid •5013g Moles of NaOH to reach equivalence point .602453 mol Moles of unknown acid Molar mass (equivalent mass) of unknown acid pKa...
work check and help with the last question. pka2 is more accurate
than pka1.
58 5. Calculation of molar mass: Use class-average NaOH molarity and your part B data. (Be sure this calculation is consistent with your choice reported in #1 and 2 above.) 6. Complete the following table, having consulted a table of diprotic acids; taking into account molar mass and pKa's, identify your unknown: I Molar mass pKa1 pKa2 From titration data Data from reference | 6-1 Unknown:...
Trying to determine the molar weight and PKa values for an unknown
diprodic acid.
I have .9010 molar NAOH titrant I have a mass of Unknown acid
being .1101 g. Equivalence point of Steepest point on graph equals
22.5mL NAOH. Equivalence OH- is 2.027×10^ -2
moles.
question---I need help to convert moles of OH ion added to
initial moles diprotic acid H2A PH 12Approximately pka1 is
approximately 3.5 at 6.25 mL OH.
data-
NaOHmL / PH 2.5 3 3.50 7.50...
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...
1. Use the data given to calculate the following parts:
a. Using your data for the value for VEP1, calculate the
molarity of H3PO4 at the 1st equivalence point, EP1. Show work
clearly, with units and correct significant figures.
b. Using your data for the value for VEP2, calculate the
molarity of H3PO4 at the 2nd equivalence point, EP2. Show work
clearly, with units and correct significant figures.
c. Calculate the percent error between these two molarity
values, % error...
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...
molariity of NaOH is 0.09591 M
Font 1.1. Paragraph 4.1 .5. 1. .2 . 1.1 ...6 Table 1. Raw Data Trial 1 Trial 2 unknown acid un acid mass of unknown acid transferred to beaker(@) 0.589 0.556 concentration of NaOH titrant solution (M) equivalence point volume of NaOH titrant (mL) 26.67 ml 26.16 ml half-equivalence point volume of NaOH titrant (mL) 13.84 ml 13.08 ml half-equivalence point pH 4.91 pH 5.14 pH 1. Calculate the moles of NaOH delivered at...
Data and Observations I. Determining the Unknown Acid Sample Size CvOt0ni aid identification code of unknown weak acid concentration of NaOH solution, M mass of weighing paper plus unknown acid, g mass of weighing paper, g final buret reading, mL initial buret reading, mL 2.0506M 2.0 Ill. Titrating the Unknown Acid identification code of unknown weak acid concentration of NaOH solution, M 500M determination 1 determination 2 LGS G mass of weighing paper plus unknown acid, g mass of weighing...
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