In a complexometric titration experiment: Determination of Water Hardness, solve for the missing values (answer only Table 2) Table 2. Data on Sample AnalysisVolume of water sample (mL) : 10.00mLTrialVolume of EDTA (mL)ppm CaCO30.190.1630.19Average ppm CaCO3 Table 1. Data on EDTA StandardizationWeight of CaCO3 (g): 0.2003gTrialVolume of EDTA (mL)Molarity of EDTA (M)18.6028.508.55Average Molarity of EDTA (M)

Na EDTA, Disodium Ethylene diamine tetra acetic acid (Na2H2C10H12N2O4 or Na2H2Y) reacts with Ca2+…

Answered: n a complexometric titration…

n a complexometric titration experiment: Determination of Water Hardness, solve for the missing values (answer only Table 2)

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.20QAP

See similar textbooks

Related questions

Q: *WRITE RESULTS AND DISCUSSIONS OF TITRATION- CONCENTRATION OF VINEGAR *WRITE CONCLUSION

A: A question based on acid-base titrations that is to be accomplished.

Q: What volume of 0.1951 M NaOH is needed to titrate 19.5100 m L of 0.2130 M acetic acid to the…

Q: A 30.00 ml sample of a 0.064 M weak acid solution is titrated with 0.068 M strong base. What is the…

A: Molarity of weak acid(HA) = 0.064 mol/LMolarity of base = 0.068 mol/LKa = 9.1610-6

Q: 10 11

A: A 50 mL burret is shown on the right. What volume of titrant does it hold?

Q: In part one if you allow your titration to go beyond a faint pink endpoint and it ends up dark pink,…

A: Given: Trial-1 Trial-2 Molarity of HCl 31.34 31.44

Q: Which of the labelled protons generates the 'HNMR signal at 10.96 ppm, singlet, integration of 12 a…

A: It important that we allow heated acid solutions to cool to room temperature before titrating…

Q: In titrating 40.0 mL of 0.10 M of HCI solution with 0.15 M of KOH solution, what would be the pH of…

A: Volume of HCl solution = 40.0 mL Molarity of HCl solution = 0.10 M Molarity of KOH solution = 0.15 M…

Q: A student titrates samples of a base with a standardised acid. The titration values obtained for…

A: Given that, Student titrates samples of a base with a standardised acid The titration values…

Q: 11-C. Calculate the pH at each point listed for the titration of 100.0 mL of 0.100 M cocaine…

A: Given: Concentration of cocaine is 0.100 M. Volume of cocaine is 100.0 mL. Kb=2.6×10-6.

Q: Second slide: A Picture from the internet of a Titration. The words titration, primary and secondary…

Q: c. How does the number of moles of hydronium ions and hydroxide ions compare at the equivalence…

A: The question is based on the concept of titrations. we have to analyse the given titration curve and…

Q: In a complexometric titration experiment: Determination of Water Hardness, solve for the missing…

A: Each mole of Ca2+ reacts with 1 mol of EDTA. Also, Moles = Mass / Molar Mass

Q: 2 3 4 Questions 1-4 refer to the same strong acid/strong base (SA/SB) titration. A 25.00 mL solution…

Q: What is standard solution ? Why is a standard solution necessary for titration?

A: Standard solution is the solution of known concentration. It is prepared from a primary standard (a…

Q: Acid-base Titration Assignment solves questions in end. if necessary use notebook to make the…

A: Given data: Volume of NaOH added (mL) pH 0.0 2.87 10.0 4.14 25.0 4.74 40.0 5.35 50.0…

Q: 1) Please define the following: Indicator Titration Neutralization Endpoint Conditioning…

A: To define Indicator, Titration, Neutralization, Endpoint, Conditioning, Standardization.

Q: Answer the following questions about the titration curve shown below. a) Choose the correct words…

A: (a) The sample is weak acid because initial pH is near to 3. The titrant is strong base. pH at…

Q: When you calculate the unknown concentration of an acid based upon your titration, you determine…

A: The concentration of an unknown solution can be calculated by titrating it with any solution of…

Q: Question 10 of 13 1. Show complete solution for determining the Molarity of NaOH (use trial 1 only)…

Q: Define Analyte and Titrant.

A: •ANALYTE:- Analyte is a solution that's concentration is determined by analysis. •So simply analyte…

Q: PLEASE ANSWER, THIS IS NOT A GRADED QUESTION. IT IS A RESEARCH. 1. How does a mixture of a weak…

A: A weak acid generally does not show complete dissociation into its ions in an aqueous solution. For…

Q: A student prepared a buffer solution using 60.00 mL of 0.2336 M acetic acid and 53.35 mL of 0.09330…

A: Volume of acetic acid = 60.00ml Concentration of acetic acid= 0.2336 M Volume of NaOH= 53.35ml…

Q: At the beginning of a titration, the acetic acid burette reads 0.30 mL. At the end of the titration.…

A: Titration starts with Burette reading 0.30 mL. That's the initial reading. Titration ends at 27.70…

Q: Describe the information necessary (and why) to choose a good indicator for a weak acid/strong base…

A: A quantitative analysis where the amount of substance is calculated by measuring the volume is…

Q: Exactly 10.66 ml of 0.066 M strong acid is added to a 30.00 ml. sample of a 0.068 M weak base…

A: The objective of this question is to calculate the pH of a solution after a strong acid is added to…

Q: Trials 1 2 3 Volume of aliquot of standard CaCO, solution 25.00 (ml) 25.00 25.00 Volume of titrant,…

A: Titer for trial 1 is determined as shown below.

Q: Q1: Gravimetric analysis refers ? 10 points Your answer Q2: Equivalence point calculate 10 points by…

A: Q. 1 Gravimetric analysis: It is a quantitative analytical technique. In this technique, we can…

Q: What volume of 0.95 M HCI (in mL) is needed to reach the equivalence point a the titration of 70.0…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: . A Malate buffer solution (pKa₁ = 3.51 and pKa2 = 5.03) contains 480.00 mM Malic acid and 640.00 mM…

Q: QUESTION 13 Consider an acid-base titration in which the base is dispensed from a burette into a…

A: An acid-base titration is the titration used to determine the unknown acid or base concentration by…

Question

In a complexometric titration experiment: Determination of Water Hardness, solve for the missing values (answer only Table 2)

Table 2. Data on Sample Analysis
Volume of water sample (mL) : 10.00mL
Trial
Volume of EDTA (mL)
ppm CaCO3
0.19
0.16
3
0.19
Average ppm CaCO3

Table 1. Data on EDTA Standardization
Weight of CaCO3 (g): 0.2003g
Trial
Volume of EDTA (mL)
Molarity of EDTA (M)
1
8.60
2
8.50
8.55
Average Molarity of EDTA (M)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step by step

Solved in 7 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

The concentration of EDTA is 2.497mM
For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 4. Why is it necessary to carry out the reduction of iron and then the titration, before going on to the next sample 5. If you look carefully, there are pieces of tin metal on the bottom of the SnCl2 reagent solution. Why is it there?
For Redox Analysis of Iron... ~0.02 M of potassium dichromate is prepared as titrant for dried unknown. ~.3 g of sample, 50ml of 6M HCl, 20mL SnCl2, 10 mL of saturated HgCl2 solution, 60 mL of 3M H2SO4, 15mL of concentrated H3PO4, 100mL DI water. HCl (+ heat in fumehood until samples dissolves), SnCl2 (added with pipet until solution changes from yellow to colorless/light green with 3 drops in excess), HgCl2 (after cooling), H2SO4, H3PO4, DI Water, is added to the sample solution with 8 drops of diphenylamine sulfonate indicator then titrated with the potassium dichromate to a violet blue endpoint. 3. How would you prepare a complete anlaysis procedure using KMnO4 as the oxidant instead of K2CrO7? Include sample and solution preparation, approximate weights of samples and reagents, procedure and chemical reactions. In particular what is the purpose of the Zimmerman Reinhardt Reagent?
5. 0.1500 g sample of chromium ore was dissolved and the chromium oxidized to chromate ion. The solution was treated with 25.00 mL of 0.3500 M AGNO3. The resulting precipitate, from the reaction of the excess and analyte in 1: 1 mole relationship, Ag2CrO4 was removed and discarded. The excess AGNO3 required 30.50 mL of 0.200 M KSCN for titration in a 1:1 mole relationship. Calculate the % Cr2O3 in the ore if the mole relationship between Cr2O3 and CrO42- is 1:2 respectively.
is the volume needed to titrate the Vequivalence?
The weight of 0.1012 g of magnesium sulphate consumed 14.5 mL of EDTA solution (0.05M). What is the percentage purity of the magnesium sulphate? 0.006019 g (equivalent factor) of M9SO4 = 1 mL Disodium edetate (0.05M) O A. 89.18 % w/w O B. 90.82 % w/w O C. 86.24 % w/w O D. 88.45 % w/w
Hardness in groundwater is due to the presence of metal ions, primarily Mg2+ and Ca²+. Hardness is generally reported as ppm CaCO,. To measure water hardness, a sample of groundwater is titrated with EDTA, a chelating agent, in the presence of the indicator Eriochrome Black T, symbolized as In. Eriochrome Black T, a weaker chelating agent than EDTA, is red in the presence of Ca²+ and turns blue when Ca2+ is removed. red blue Ca(In)2+ + EDTA → Ca(EDTA)²+ + In A 50.00 mL sample of groundwater is titrated with 0.0100 M EDTA. If 10.20 mL of EDTA is required to titrate the 50.00 mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO, by mass? Assume that Ca2+ accounts for all of the hardness in the groundwater. hardness in molarity: M CACO3 hardness in parts per million: ppm CaCO3
A 0.5 g sample of an alloy containing 30% (m/m) iron (MM 55.84 g/mol) is dissolved in acid and diluted to 1 L with deionized water. A 10 mL aliquot was taken for analysis, conveniently diluted and included with an excess of ammonium hydroxide, which led to the formation of a reddish solid. After filtration and washing, the solid was calcined to Fe2O3 (MM 159.69 g/mol). Calculate the mass of this final product.
An alloy containing Ni, Fe and Cr was analyzed by a complexation titration using EDTA as titrant. A 0.7176 g sample of the alloy was dissolved in HNO3 and diluted to 250 mL in a flask. A 50.00 mL aliquot of the sample, treated with pyrophosphate to mask Fe and Cr, required 26.14 mL of 0.05831 M EDTA to reach the murexide endpoint. A second 50.00 mL aliquot was treated with hexamethylenetetramine to mask Cr and titration with 0.05831 M EDTA required 35.43 mL to reach the murexide endpoint. Finally, a third 50.00 mL aliquot was treated with 50.00 mL of 0.05831 M EDTA and titrated back to the murexide endpoint with 6.21 mL of 0.06316 M Cu(II). the weight percentages of Ni, Fe and Cr in the alloy.
A 25.00 mL aliquot (a portion or part) of the standard Ca (II) solution (prepared by dissolving 0.3139 g CaCO3 in water and diluted to 250 mL) reacts with 27.25 mL of the EDTA solution. What is the molarity of the EDTA? Show calculation below.
based on data given: 1)do a cation-anion balance 2)find and compare IAP of anhydrite with the Ksp of anhydrite (10^-4.5) 3)find and conpare ion activity product (IAP) of calcite with the ksp of calcite (10^88.4)
DATA AND RESULTS: Titration Data (Standardization of EDTA) Example II Mass, g Caco, 0.0250 0.0251 0.0246 0.0254 Final reading, mL 25.00 24.91 24.87 25.31 Initial Reading, mL 0.00 0.02 0.02 0.02 Volume, mL EDTA 25.00 Molarity of EDTA, M 0.009992 B. Analysis Data Example II Volume of Sample, mL 25.00 24.90 25.10 25.0 Final reading, mL 27.46 25.08 25.06 24.99 Initial Reading, mL 0.00 0.02 0.02 0.02 Volume of EDTA, mL 27.46 Molarity of EDTA, M 0.009992 Ca" concentration, ppm 440 STATISTICAL EVALUATION OF RESULTS Standardization of EDTA Mean, M EDTA Median, M EDTA Standard Deviation Ci for u at 95% Prob. Level Reported value: M EDTA Ca" Concentration Mean, Ca" ppm Median, Ca" ppm Standard deviation Cl for u at 95% Prob. Level Reported value: Ca" ppm