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 the
pKa1 and pKa2?
From pKa1 and pKa2 calculate the Ka1 and Ka2.
Homework Answers
1 ans... Poly protic is the one which can release more than one acidic protons on dissociation..
Eg. h2so4, h3po4 etc..
Add Answer to:
What is a polyprotic acid?
2. How many moles of H3O + are present in 50...
Name Desk Date, Laboratory Instructor Titration Curves of 26 Pre-lab Polyprotic Acids Questions t...
Name Desk Date, Laboratory Instructor Titration Curves of 26 Pre-lab Polyprotic Acids Questions tory, you should be able to answer the Before beginning this experiment in the labora following questions. 1. What is a polyprotic acid? If 10.7 mL of 0.105 M NaOH is required to reach the first equivalence point of a solution of citric acid (H,CH,O,), how many milliliters of NaOH are required to completely neutralize this solution? 2. 3. How many millimoles of NaOH will react completely...
Based on figure 2, the titration curve of 25.0 mL of phosphoric acid with 0.1082 M...
Based on figure 2, the titration curve of 25.0 mL of phosphoric
acid with 0.1082 M NaOH, determine the following:
1) The molarity of the acid
2) the Ka1 and pKa1 of the acid
3) the Ka2 and pKa2 of the acid
Figure 2. Typical Polyprotic Acid Titration, pH vs. ml NaOH 12.00 Hd ml NaOH
Titration Curves of Polyprotic Acids Pre-lab Questions Before beginning this experiment in the laboratory, you should...
Titration Curves of Polyprotic Acids Pre-lab Questions Before beginning this experiment in the laboratory, you should be able to answer the following questions. 1. What is a polyprotic acid? 2. If 10.70 mL of 0.105 M NaOH is required to reach the first equivalence point of a solution of citric acid (H,C H307), how many milliliters of NaOH are required to completely neutralize this solution? 3. How many millimoles of NaOH will react completely with 50 mL of 1.5 MH,C20,?...
Calculate the pH and concentration of species present in a polyprotic acid solution.
Calculate the pH and concentration of species present in a polyprotic acid solution.For a 3.44×10-3 M solution ofH2CO3, calculate both the pH and the CO32- ion concentration.H2CO3 + H2O → H3O+ +HCO3-Ka1 = 4.2×10-7HCO3- + H2O → H3O+ +CO32-Ka2 = 4.8×10-11pH =[CO32-] =
6. Oxalic acid H2C2O4 is a diprotic acid and can be used, in dilute form, as...
6. Oxalic acid H2C2O4 is a diprotic acid and can be used, in
dilute form, as wood bleach. pKa1 = 1.237 and pKa2=4.187
A. How many milliliters of 0.0500 M NaOH would be required to
completely neutralize 10.0 mL of 0.100 M H2C2O4? (5 pts)
B. Estimate the pH at the first equivalence point of the
titration. (6 pts)
C. What is the pH at the second equivalence point of the
titration. (8 pts)
Please help with work shown, especially...
From the molar mass/pKa1/pKa2 values, how can I identify an unknown polyprotic acid? 217 1. Mass...
From the molar mass/pKa1/pKa2 values, how can I identify an
unknown polyprotic acid?
217 1. Mass of unknown acid (9) 2. Volume of NaOH at first equivalence point (ML) (from titration curve and derivative graph) 11.418 .C02055 002055 3. Moles of NaOH at first equivalence point. 4. Moles of unknown acid. 5. Molar mass of unknown acid (g/mol). 6. Experimental pka 1 7. Experimental pka 2 8. Identity of unknown acid 105 1.95 6.04 9. Theoretical molar mass of unknown...
Part A Citric acid is a triprotic weak acid. If 12.0 mL of 0.120 M NaOH...
Part A Citric acid is a triprotic weak acid. If 12.0 mL of 0.120 M NaOH is required to reach the first equivalence point of a solution of citric acid how many mL of NaOH are required to completely neutralize this solution? Π ΑΣφ mL Request Answer Submit
Consider a different analyte for this exercise. Citric acid is found in many fruits and fruit...
Consider a different analyte for this exercise. Citric acid is
found in many fruits and fruit juices. Sodium hydroxide (NaOH) is
the titrant and citric acid
(H3C6H5O7) the analyte
according to the following balanced chemical equation.
Complete the following table for this titration.
Data Table P2: Titration of citric acid in orange juice with
sodium hydroxide.
concentration of OH−
0.0702
M
volume orange juice
8.65 mL
mass
orange juice
8.79 g
volume of OH−
solution
27.58 mL
mmol
of OH−...
Acid - Base Titration Experiment ACID-BASE TITRATION CHEM 1111 Name Date: Post - Laboratory Review Questions...
Acid - Base Titration Experiment ACID-BASE TITRATION CHEM 1111 Name Date: Post - Laboratory Review Questions and Exercises DUE AFTER COMPLETING LAB. ANSWER IN THE SPACE PROVIDED 1. Write the Molecular, Complete, and Net equations for the neutralization reaction of HC and No. 2. How many milliliters of 0.50 M Phosphoric acid, H,PO.. are required to neutralize 25,0 mL of 0.50 M NaOH? 3. Why should you plan to start the titration with the acid and base burettes filled exactly...
2. Soda has a pH between 3 and 4. Soda makers often add citric acid to give a tart taste to soda....
2. Soda has a pH between 3 and 4. Soda makers often add citric acid to give a tart taste to soda. 20 ml of 0.1 M citric acid (H 3C6H57, pa 3.1, pKa2 4.7, pKa3 6.4) is titrated with 0.1 M NaOH a2 4.7, pka3 6.4) is titrated pH 0 10 20 30 40 50 60 volume of NaOH Citric acid can be used as a buffer. The formula and charge of citric acid (H3CsH5o7, H2C6Hso, HCGH,o, CH3) depends...
Name Desk Date, Laboratory Instructor Titration Curves of 26 Pre-lab Polyprotic Acids Questions tory, you should be able to answer the Before beginning this experiment in the labora following questions. 1. What is a polyprotic acid? If 10.7 mL of 0.105 M NaOH is required to reach the first equivalence point of a solution of citric acid (H,CH,O,), how many milliliters of NaOH are required to completely neutralize this solution? 2. 3. How many millimoles of NaOH will react completely...
Based on figure 2, the titration curve of 25.0 mL of phosphoric
acid with 0.1082 M NaOH, determine the following:
1) The molarity of the acid
2) the Ka1 and pKa1 of the acid
3) the Ka2 and pKa2 of the acid
Figure 2. Typical Polyprotic Acid Titration, pH vs. ml NaOH 12.00 Hd ml NaOH
Titration Curves of Polyprotic Acids Pre-lab Questions Before beginning this experiment in the laboratory, you should be able to answer the following questions. 1. What is a polyprotic acid? 2. If 10.70 mL of 0.105 M NaOH is required to reach the first equivalence point of a solution of citric acid (H,C H307), how many milliliters of NaOH are required to completely neutralize this solution? 3. How many millimoles of NaOH will react completely with 50 mL of 1.5 MH,C20,?...
6. Oxalic acid H2C2O4 is a diprotic acid and can be used, in
dilute form, as wood bleach. pKa1 = 1.237 and pKa2=4.187
A. How many milliliters of 0.0500 M NaOH would be required to
completely neutralize 10.0 mL of 0.100 M H2C2O4? (5 pts)
B. Estimate the pH at the first equivalence point of the
titration. (6 pts)
C. What is the pH at the second equivalence point of the
titration. (8 pts)
Please help with work shown, especially...
From the molar mass/pKa1/pKa2 values, how can I identify an
unknown polyprotic acid?
217 1. Mass of unknown acid (9) 2. Volume of NaOH at first equivalence point (ML) (from titration curve and derivative graph) 11.418 .C02055 002055 3. Moles of NaOH at first equivalence point. 4. Moles of unknown acid. 5. Molar mass of unknown acid (g/mol). 6. Experimental pka 1 7. Experimental pka 2 8. Identity of unknown acid 105 1.95 6.04 9. Theoretical molar mass of unknown...
Part A Citric acid is a triprotic weak acid. If 12.0 mL of 0.120 M NaOH is required to reach the first equivalence point of a solution of citric acid how many mL of NaOH are required to completely neutralize this solution? Π ΑΣφ mL Request Answer Submit
Consider a different analyte for this exercise. Citric acid is
found in many fruits and fruit juices. Sodium hydroxide (NaOH) is
the titrant and citric acid
(H3C6H5O7) the analyte
according to the following balanced chemical equation.
Complete the following table for this titration.
Data Table P2: Titration of citric acid in orange juice with
sodium hydroxide.
concentration of OH−
0.0702
M
volume orange juice
8.65 mL
mass
orange juice
8.79 g
volume of OH−
solution
27.58 mL
mmol
of OH−...
Acid - Base Titration Experiment ACID-BASE TITRATION CHEM 1111 Name Date: Post - Laboratory Review Questions and Exercises DUE AFTER COMPLETING LAB. ANSWER IN THE SPACE PROVIDED 1. Write the Molecular, Complete, and Net equations for the neutralization reaction of HC and No. 2. How many milliliters of 0.50 M Phosphoric acid, H,PO.. are required to neutralize 25,0 mL of 0.50 M NaOH? 3. Why should you plan to start the titration with the acid and base burettes filled exactly...
2. Soda has a pH between 3 and 4. Soda makers often add citric acid to give a tart taste to soda. 20 ml of 0.1 M citric acid (H 3C6H57, pa 3.1, pKa2 4.7, pKa3 6.4) is titrated with 0.1 M NaOH a2 4.7, pka3 6.4) is titrated pH 0 10 20 30 40 50 60 volume of NaOH Citric acid can be used as a buffer. The formula and charge of citric acid (H3CsH5o7, H2C6Hso, HCGH,o, CH3) depends...
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