How do you report the average and %RSD for the %w/w of acetic acid in an...
How do you report the average and %RSD for the %w/w of acetic acid in an unknown solution after titrating with NaOH in triplicate? Just explain the process, and how these values can be reported via the colorimetric and potentiometric endpoints.
Homework Answers
for this point you have not provided data for other trials so not possible to carry out but gide for doing this:
average value of w/w% calculated from end point of each potentiometric titration
RSD% (relative standard deviation %) is a specialform of the standard deviation.
this can be calculated from this formula:
100 * sigma / |x|
where sigma = standard deviation
|x| = mean
Add Answer to:
How do you report the average and %RSD for the %w/w of acetic
acid in an...
Suppose you are titrating vinegar, which is an acetic acid solution, of unknown strength with a...
Suppose you are titrating vinegar, which is an acetic acid solution, of unknown strength with a sodium hydroxide solution according to the equation HC2H3O2+NaOH⟶H2O+NaC2H3O2HCX2HX3OX2+NaOH⟶HX2O+NaCX2HX3OX2 If you require 30.16 mL of 0.1428 M NaOHNaOH solution to titrate 10.0 mL of HC2H3O2HCX2HX3OX2 solution, what is the concentration of acetic acid in the vinegar?
How do I calculate the ionization constant for acetic acid from the measured pH of the acedic aci...
How do I calculate the ionization
constant for acetic acid from the measured pH of the acedic acid
samples?
Data and Calculations 1. Measurement of pH and fitration of acetfic acid solution Concentration of standardized NaOH titrant Mass concentration of acetic acid-aao Trial 3 Trial 2 Trial 1 Measured pht of the acetic acid solution Mass of acetic acid solution taken for titration. Initial buret reading of NaOH titrant Final buret reading of NaOH titrant Net volume of NaOH Millimoles...
4. You are titrating 100 ml of a 0.25 M solution of acetic acid (pk. =...
4. You are titrating 100 ml of a 0.25 M solution of acetic acid (pk. = 4.75) with a 1.25 M solution of NaOH. What is the pH of the solution after you have added 10.0 ml of the NaOH?
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
a-c 5, Vinegar should contain more than 4% acetic acid (CHCOOH, molar mass 60.0 g mor)...
a-c
5, Vinegar should contain more than 4% acetic acid (CHCOOH, molar mass 60.0 g mor) 25.0 mL of vinegar are diluted to 100.0 mL and 10.0 mL samples of this solution are titrated against 0.100 mol L-NaOH solution. An average of 18.1 mL NaOH are required to neutralize the vinegar. You will need to calculate the concentration of the diluted solution and hence the percentage concentration of acetic acid in the original vinegar via the following questions: CH COOH(aq)...
Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid...
Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read the base titrant volume as 2.86 mL. After running the titration and reaching the endpoint, you read the base titrant volume as 21.17 mL. What volume, in mL, of base was required for the titration? Type answer: Question 6 Status: Not yet answered Points possible: 1.00 Suppose you are...
Calculate the mols of acetic acid at equilibrium for the given data and report it in millimol (no units need to be entered). Use the average volume of NaOH rather than doing the calculation for ea...
Calculate the mols of acetic acid at
equilibrium for the given data and report it in millimol (no
units need to be entered). Use the average volume of NaOH rather
than doing the calculation for each trial. (please show work)
Question 4 3 pts A student titrated 5.00 mL of 50.00 mL reference solution with 0.692 M NaOH(aq) The information of the reference solution is given as Initial Chemical Mols ethyl 0.101 acetate ethanol 0.258 acetic 0.052 acid H20 1.034...
5. Determine the average value for the molarity of the acetic acid in vinegar. Show your...
5. Determine the average value for the molarity of the acetic acid in vinegar. Show your calculation 6. Determine the deviation between each individual molarity for acetic acid and the average value from question 4, above. Notice that the formula below uses absolute values: you only care about how big the difference is not whether cach trial value was higher or lower than the average. Deviation = (individual trial value)-(average value from #5) Trial Ideviation Trial 2 deviation Trial 3...
Experiment VII: Buffers Lab Report ( 49 pts) I. Determination of the K, of acetic acid...
Experiment VII: Buffers Lab Report ( 49 pts) I. Determination of the K, of acetic acid 1. Measured pH of the solution PH 2.40 < Calculate the [H3O*) at equilibrium for this solution. (include units) Tog [HT] = 10-2.40 H 0% 0.004 m. 3. Calculate the [CH,C00] at equilibrium for this solution. (include units) [CH.CO01 0.004 m 4. What is the [CH3COOH) at equilibrium for this solution? (include units) 700. [CH.COOH): 0.00lem 5. Based on these values, what the acid...
how do we determine the mass of acid/mole of sodium hydroxide of the unknown acid? i...
how do we determine the mass of acid/mole of sodium hydroxide of
the unknown acid?
i
am just looking for the formula to solve it
D. Determination of the mass of an unknown acid required to neutralize one mole of hydroxide ion. Obtain a clean, dry capped shell vial containing an unknown acid. Record your unknown's number and label the vial. Keep this vial in your locker until your graded lab report has been returned to you. 1. Note: the...
How do I calculate the ionization
constant for acetic acid from the measured pH of the acedic acid
samples?
Data and Calculations 1. Measurement of pH and fitration of acetfic acid solution Concentration of standardized NaOH titrant Mass concentration of acetic acid-aao Trial 3 Trial 2 Trial 1 Measured pht of the acetic acid solution Mass of acetic acid solution taken for titration. Initial buret reading of NaOH titrant Final buret reading of NaOH titrant Net volume of NaOH Millimoles...
4. You are titrating 100 ml of a 0.25 M solution of acetic acid (pk. = 4.75) with a 1.25 M solution of NaOH. What is the pH of the solution after you have added 10.0 ml of the NaOH?
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
a-c
5, Vinegar should contain more than 4% acetic acid (CHCOOH, molar mass 60.0 g mor) 25.0 mL of vinegar are diluted to 100.0 mL and 10.0 mL samples of this solution are titrated against 0.100 mol L-NaOH solution. An average of 18.1 mL NaOH are required to neutralize the vinegar. You will need to calculate the concentration of the diluted solution and hence the percentage concentration of acetic acid in the original vinegar via the following questions: CH COOH(aq)...
Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read the base titrant volume as 2.86 mL. After running the titration and reaching the endpoint, you read the base titrant volume as 21.17 mL. What volume, in mL, of base was required for the titration? Type answer: Question 6 Status: Not yet answered Points possible: 1.00 Suppose you are...
Calculate the mols of acetic acid at
equilibrium for the given data and report it in millimol (no
units need to be entered). Use the average volume of NaOH rather
than doing the calculation for each trial. (please show work)
Question 4 3 pts A student titrated 5.00 mL of 50.00 mL reference solution with 0.692 M NaOH(aq) The information of the reference solution is given as Initial Chemical Mols ethyl 0.101 acetate ethanol 0.258 acetic 0.052 acid H20 1.034...
5. Determine the average value for the molarity of the acetic acid in vinegar. Show your calculation 6. Determine the deviation between each individual molarity for acetic acid and the average value from question 4, above. Notice that the formula below uses absolute values: you only care about how big the difference is not whether cach trial value was higher or lower than the average. Deviation = (individual trial value)-(average value from #5) Trial Ideviation Trial 2 deviation Trial 3...
Experiment VII: Buffers Lab Report ( 49 pts) I. Determination of the K, of acetic acid 1. Measured pH of the solution PH 2.40 < Calculate the [H3O*) at equilibrium for this solution. (include units) Tog [HT] = 10-2.40 H 0% 0.004 m. 3. Calculate the [CH,C00] at equilibrium for this solution. (include units) [CH.CO01 0.004 m 4. What is the [CH3COOH) at equilibrium for this solution? (include units) 700. [CH.COOH): 0.00lem 5. Based on these values, what the acid...
how do we determine the mass of acid/mole of sodium hydroxide of
the unknown acid?
i
am just looking for the formula to solve it
D. Determination of the mass of an unknown acid required to neutralize one mole of hydroxide ion. Obtain a clean, dry capped shell vial containing an unknown acid. Record your unknown's number and label the vial. Keep this vial in your locker until your graded lab report has been returned to you. 1. Note: the...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago