Homework Answers
Multicellularity has evolved multiple times
1) Curve on the left :-
Before addition of base pH=1 so this implies that the titration curve is of strong acid and strong base
Curve on the right :-
Before addition of base pH=3 so this implies that the titration curve is of weak acid and strong base
2) since the equivalence point is 7 so HCl of same molaity as
NaOH can be used as a titrand
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(2pts) 15) Multicellularity has evolved once/multiple times. Pick the correct answer once multiple times Titration (5pts)...
Question: In the figure below, titration curves for strong acid with strong base and weak acid...
Question: In the figure below, titration curves for strong acid
with strong base and weak acid with strong base are shown. Compare
the shapes of these curves early in the titration for three
different cases: titration of a strong acid, titration of a weak
acid with a lower pKa, and titration of a weak acid with a higher
pKa. Discuss with the class why the titration curve for weak acids
increase more rapidly early in the titration than do stronger...
pH titration curves experiment Prelab exercise The figure below shows how to interpret titration curve Figure...
pH titration curves experiment Prelab exercise The figure below shows how to interpret titration curve Figure 1: Interpretation of a pH titration curve. pH vs. volume of 0.20 M NaOH soluti added to 20.0 mL unknown acid HA 13 12 10 Equivalence point Volume added to reach equivalence 10 15 20 30 35 45 1/2- way to equivalence point Volume NaOH (mL) Please refer to the data provided in the excel sheet (attached separately) and use it to answer the...
This is incorrect. What are the titration points for this titration curve? The pH values, respectively...
This is incorrect. What are the titration points for this
titration curve? The pH values, respectively at 0 mL is 9.16, at 10
mL pH is 5.56, at 20 mL pH is 4.98, at the equivalence point the pH
is 3.24, at one half equivalence point the pH is 5.23, at 40 mL the
pH is 1.87, at 50 mL the pH is 1.60.
Use your calculations to make a sketch of the titration
curve.
Label Titration curve : y...
Using the literature/accepted Ka value where needed, calculate the expected pH of the titration mixture: When...
Using the literature/accepted Ka value where needed,
calculate the expected pH of the titration mixture:
When 45 mL of NaOH has been added
At the equivalence point
RAW DATA AND OBSERVATIONS Table 1: Titration of acetic acid with O, DRH58 , mol L1 NaOH(aq) (5.5 marks) Concentration of acid: O 080 yeiCo mol L- Colour change: dok pak to qelloo 25.00 methyl-red b.62 mL Volume of acid sample: Indicator: Sharp or gradual change: hadud pH of color change: 3. Locate...
Given the following titration curve, which of the statements below are true? (Select all that apply.) Titration of a Po...
Given the following titration curve, which of the statements below are true? (Select all that apply.) Titration of a Polyprotic Acid 12 10 8 ㅎ 6 2 0 0 10 15 20 25 30 35 Volume of NaOH added (m L) a. The 2nd proton is half titrated at 12 mL NaOH added. b. The 1st midpoint occurs at pH about 3.5 c. The 2nd proton requires the same volume of NaOH to titrate as the 1st. d. The 2nd...
Using the literature/accepted value of Ka where needed, calculate the expected pH of the titration mixtire:...
Using the literature/accepted value of Ka where
needed, calculate the expected pH of the titration mixtire:
a)before any NaOH has been added
b)when 18.00 mL of NaOH has been added
10 - mL Table 1: Titration of acetic acid with 0.09458 mol L 1 NaOH(aq) (5.5 marks) Volume of acid sample:__25.00 Concentration of acid: 0.08887_mol L- Indicator methyl-red Colour change: dock pink to vellas yellow pH of color change: 6.62 Sharp or gradual change: Cadud Burette Cumulative Vol Burette Cumulativo...
NEED help with these questions Question 1 (1 point) Saved The Ksp of PbCl2 is 1.2...
NEED help with these questions
Question 1 (1 point) Saved The Ksp of PbCl2 is 1.2 x 10-5. What is its molar solubility? 0.72M 1.32M 0.0023 M 0.0022 M 0.018 M 0.12 M 0.014 M 0.0017 M Question 2 (1 point) Saved MacBook Cquivalent point pH, 8.72 pH ONWAOO! IT 0+TT 0 5 10 15 20 25 30 35 40 45 50 Volume of 0.100 M NaOH added (mL) For the titration curve above, what is the Ka of the...
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"]
...
can someone help me answer these 5 questions and figire this graph out please? Acid-Base Titration...
can
someone help me answer these 5 questions and figire this graph out
please?
Acid-Base Titration of a Weak Acid with a Strong Base: Determination of K. Introduction: You will be titrating a solution of a weak acid with 0.100 M NaOH, while monitoring the reaction using a pH meter. Weak acids have characteristic acid-ionization constants, K. The purpose of this lab is to use the titration to determine the value of this constant for the weak acid called “benzoic...
Based on the following information... please answer A. B. and C. TITRATION OF A WEAK ACID...
Based on the following information...
please answer A. B. and C.
TITRATION OF A WEAK ACID TRIAL #1 equivalence point halfway point 25 VOLUME OF BASE ADDED 30 35 40 TITRATION OF A WEAK ACID TRIAL #2 1 equivalence point Hd half-way point s 10 15 30 35 40 45 20 25 VOLUME OF BASE ADDED Trial 1 Trial 2 Mass of oxalic acid 0.2039 pH at equivalence point a Mass of oxalic acid 0.2099 at equivalence point nt 8,5...
Question: In the figure below, titration curves for strong acid
with strong base and weak acid with strong base are shown. Compare
the shapes of these curves early in the titration for three
different cases: titration of a strong acid, titration of a weak
acid with a lower pKa, and titration of a weak acid with a higher
pKa. Discuss with the class why the titration curve for weak acids
increase more rapidly early in the titration than do stronger...
pH titration curves experiment Prelab exercise The figure below shows how to interpret titration curve Figure 1: Interpretation of a pH titration curve. pH vs. volume of 0.20 M NaOH soluti added to 20.0 mL unknown acid HA 13 12 10 Equivalence point Volume added to reach equivalence 10 15 20 30 35 45 1/2- way to equivalence point Volume NaOH (mL) Please refer to the data provided in the excel sheet (attached separately) and use it to answer the...
This is incorrect. What are the titration points for this
titration curve? The pH values, respectively at 0 mL is 9.16, at 10
mL pH is 5.56, at 20 mL pH is 4.98, at the equivalence point the pH
is 3.24, at one half equivalence point the pH is 5.23, at 40 mL the
pH is 1.87, at 50 mL the pH is 1.60.
Use your calculations to make a sketch of the titration
curve.
Label Titration curve : y...
Using the literature/accepted Ka value where needed,
calculate the expected pH of the titration mixture:
When 45 mL of NaOH has been added
At the equivalence point
RAW DATA AND OBSERVATIONS Table 1: Titration of acetic acid with O, DRH58 , mol L1 NaOH(aq) (5.5 marks) Concentration of acid: O 080 yeiCo mol L- Colour change: dok pak to qelloo 25.00 methyl-red b.62 mL Volume of acid sample: Indicator: Sharp or gradual change: hadud pH of color change: 3. Locate...
Given the following titration curve, which of the statements below are true? (Select all that apply.) Titration of a Polyprotic Acid 12 10 8 ㅎ 6 2 0 0 10 15 20 25 30 35 Volume of NaOH added (m L) a. The 2nd proton is half titrated at 12 mL NaOH added. b. The 1st midpoint occurs at pH about 3.5 c. The 2nd proton requires the same volume of NaOH to titrate as the 1st. d. The 2nd...
Using the literature/accepted value of Ka where
needed, calculate the expected pH of the titration mixtire:
a)before any NaOH has been added
b)when 18.00 mL of NaOH has been added
10 - mL Table 1: Titration of acetic acid with 0.09458 mol L 1 NaOH(aq) (5.5 marks) Volume of acid sample:__25.00 Concentration of acid: 0.08887_mol L- Indicator methyl-red Colour change: dock pink to vellas yellow pH of color change: 6.62 Sharp or gradual change: Cadud Burette Cumulative Vol Burette Cumulativo...
NEED help with these questions
Question 1 (1 point) Saved The Ksp of PbCl2 is 1.2 x 10-5. What is its molar solubility? 0.72M 1.32M 0.0023 M 0.0022 M 0.018 M 0.12 M 0.014 M 0.0017 M Question 2 (1 point) Saved MacBook Cquivalent point pH, 8.72 pH ONWAOO! IT 0+TT 0 5 10 15 20 25 30 35 40 45 50 Volume of 0.100 M NaOH added (mL) For the titration curve above, what is the Ka of the...
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"]
...
can
someone help me answer these 5 questions and figire this graph out
please?
Acid-Base Titration of a Weak Acid with a Strong Base: Determination of K. Introduction: You will be titrating a solution of a weak acid with 0.100 M NaOH, while monitoring the reaction using a pH meter. Weak acids have characteristic acid-ionization constants, K. The purpose of this lab is to use the titration to determine the value of this constant for the weak acid called “benzoic...
Based on the following information...
please answer A. B. and C.
TITRATION OF A WEAK ACID TRIAL #1 equivalence point halfway point 25 VOLUME OF BASE ADDED 30 35 40 TITRATION OF A WEAK ACID TRIAL #2 1 equivalence point Hd half-way point s 10 15 30 35 40 45 20 25 VOLUME OF BASE ADDED Trial 1 Trial 2 Mass of oxalic acid 0.2039 pH at equivalence point a Mass of oxalic acid 0.2099 at equivalence point nt 8,5...
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