A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): What is the ppm?10,290 ppm 12,390 ppm 11,270 ppm 990 ppm Table 1. Standrdization of the EDTA solutionmass of CaCO30.4567 gusedInitial burette reading 8.20 mLFinal burette reading 15.65 mLVolume consumed 7.45 mLTable 2. Determination of Hardness of WaterVolume of watersample50.00 mLInitial burette reading 15.65 mLFinal burette reading 24.85 mLVolume consumed 9.20 mL

The hardness of water is determined by the concentration of magnesium and calcium ions in water.…

A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): What is the ppm? 10,290 ppm 12,390 ppm 11,270 ppm 990 ppm

A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): What is the ppm? 10,290 ppm 12,390 ppm 11,270 ppm 990 ppm

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter16: Data Processing With Excel

Section: Chapter Questions

Problem 5P

See similar textbooks

Related questions

Q: 0.7050-g of pure KHP (FW = 204.2) was dissolved and titrated with 35.00mL of NaOH solution. The…

Q: Plants undergo photosynthesis in order to provide oxygen into the air, which is vital for the human…

A: Since you have posted multiple questions I'll answer the first question for you. For the rest to get…

Q: Question 20 Consider an aqueous solution of surfactant. What happens to its surface tension beyond…

A: Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area…

Q: 9.18 An intravenous solution to replace potassium loss contains 40. mEq/L each of K* and CI. How…

A: moles of individuals can be calculated from the concentration. Note: As the image contains multiple…

Q: Question 25 KSCN is commonly used as the secondary titrant in Volhard titration. True False

A: Basically two titratant are used in volhard titration reaction first one is Ammonium thiocynate and…

Q: How to figure out E and Z fornalkenes?

Q: Question 3 Which reaction order(s) will not require an initial concentration to solve its half-life?…

A: Which reaction order will not require an initial concentration to solve half life ? Answer and…

Q: Balance the following redox reactions: 1. Al(s) + NO3-(aq) → Al(OH)4-(aq) + NH3(g) [basic] 2. Cu(s)…

A: We have to balance the given redox reactions. The given redox reactions are Al(s) + NO3-(aq) →…

Q: 16. Consider an aqueous solution of ammonium cyanide, NH4CN(aq). Identify the pH of the solution as…

A: Here we are required to predict the nature of aqueous solution of NH4CN

Q: Given this molecule, how would I be able to identify it via an HNMR spectrum? What would the NMR…

A: identify it via an HNMR spectrum

Q: The structure of an amino acid is shown. Identify the amino acid. asparagine glutamine aspartate…

A: The amino acids are the building block of protein. They have one carboxylic group, one amino group,…

Q: Complete the lecithin molecule by replacing each X to show myristic acid (CH₂(CH₂)2COOH) and the Z…

A: We have to complete the structure of the lecithin molecule A

Q: Give the systematic name of the compound. OH H3C. CH3 CH₂ OH The name of the compound is

A: The given compound is:

Q: The rate constant of a certain reaction is known to obey the Arrhenius equation, and to ha reaction…

Q: A solution is made up of 86.3g ethylene glycol (C2H6O2) in 143.2g of water. Calculate the freezing…

Q: D= C=O CH3CH₂OH CH₂CH3 tetrahydrogestrinone (THG), a "designer" synthetic steroid HO aldosterone…

A: The ring structure that is common to all steroids is:

Q: estion 4 Which of the following is based on the emission of a second electron after high energy…

A: Metals can be defined as the substances that are good conductors of electricity and are…

Q: What is the “expulsion of water from a gel”? Explain

A: A question based on properties of liquid that is to be accomplished.

Q: Question 16 A mixture of 2.00 mL 0.100 M sodium hydroxide and 1.00 L of 0.200 M calcium chloride was…

Q: 1) C6H6 + O₂ 2 2) C12H22O11 + O₂ −− 3) CocHra + Qo --->

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…

Q: 1.40 What kind of hybridization do you expect for each carbon atom in the following molecules? (a) H…

A: In this question, we will find out the hybridization in each carbon centers. You can see the…

Q: A calorimeter holds 45 g water at 22.0°C. A sample of hot iron is added to the water, and the final…

A: Specific heat is the amount of heat energy required to raise the temperature of unit mass by unit…

Q: 1. What Grignard reagent and carbonyl compound are needed to prepare the alcohol below: H3COH CH3…

Q: Which intermolecular force do you think is primarily responsible for the difference in boiling point…

A: Hydrogen bonding. Acetone molecules are attracted to each other by van der Waals attraction and…

Q: 3. When aqueous sodium carbonate (Na₂CO3) is added to barium chloride (BaCl₂), barium carbonate…

A: Detail mathematical calculation is shown below

Q: What is the solubility of cadmium sulfide? 144.46 g/mol; Ksp = 8.0 x 10-28 1.1 x 10-10 g/L 2.1 x…

Q: A certain half-reaction has a standard reduction potential Ered=-0.98 V. An engineer proposes using…

Q: Which of the following reagent provides more than one pair of electrons for metal ions to form a…

Q: The rate constant for a particular reaction is 2.7 x 10-2 s1 at 25°C and 6.2 × 10-2 s1 at 115°C.…

A: The rate constant increases with increase in temperature. This is explained by Arrhenius equation.

Q: Question 11 What is the relationship between Ksp and s for aluminum hydroxide? O Ksp = 108s5 O Ksp =…

Q: Describe the structural feature (s) that you feel influence the basicity of a molecule. Be sure you…

A: It is given to describe the structural features that influence the basicity of a molecule. Features…

Q: The table of "Axial Strain Energies for Monosubstituted Cyclohexanes" found in the "Strain Energy…

Q: Question #3: Fill in the number or 1/[S] in the table below. Round to the nearest hundredth.…

A: In the given question we have to fill the data. rate is given we have to find out 1/[S] = 1/rate…

Q: "To calculate the analyte in Fajan titration, the equation needed is mol Chloride ion = mol AgNO3 -…

A: Fajan titration method: AgNO3 (exess) + NaCl →AgCl (ppt) + NaNO3 Excess AgNO3 forms layer on AgCl

Q: explain the reaction pathway of combustion of ethanol

A: Answer - Reaction of combustion of ethanol ethanol C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l) −1366.8…

Q: Question 18 "After standardization, silver nitrate must be stored in amber bottle and at room…

A: Silver nitrate is a solution which is used in precipitation titrations.

Q: The last step in the synthesis of divinyl ether (used as an anesthetic under the name Vinethene)…

Q: Before the endpoint, the Chloride ion which is in excess adsorbed on the surface of AgCl, imparting…

A: In a precipitation titration, analyte and titrant mixes and form an insoluble precipitate. Based on…

Q: Statement 1: Mohr titration is usually performed in an acidic medium. Statement 2: This is because…

A: Mohr titration is performed in neutral or slightly basic medium. So statement 1 'Mohr titration is…

Q: Assign an oxidation state to each atom SO3

A: Assign an oxidation state to each atom in SO3.

Q: How much Cu²+ is needed to precipitate cupric hydroxide (Ksp = 2.2 x 10-20) if there is 4.3 x 10-8 M…

Q: Lecithins are a type of glycerophospholipid. They are also called phosphatidylcholines and are…

A: the given lecithine molecule

Q: Identify the type of titration method. Choose the best answer can be carried out at low pH or…

A: Given:- We have to choose the following titration methods in the above questions. a)Fajan b) Volhard…

Q: 9.Use the following information to answer the next question. * Hydrogen iodide, HI(g) is a…

A: At equilibrium, reactants and products coexist in the reaction vessel.

Q: 1. What Grignard reagent and carbonyl compound are needed to prepare the alcohol below: H3COH CH3…

Q: Suppose a sample of refrigerant gas consisting of a simple mixture of the gases pentafluoroethane…

A: In this question we will first find out the average molecular mass, given the density(d),…

Q: t condition will decrease the solubility High pH Low pH

A: The equilibrium solubility is, BaF2(s) ----> Ba2+(aq.) + 2F-(aq.) As we kn, due to odd ion…

Q: Question 26 "Before the endpoint, the Chloride ion which is in excess adsorbed on the surface of…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following compounds is most soluble in water? Assume that all Ksp values are for…

A: Which of the following compounds is most soluble in water?

Q: Question 19 In AFM, what is the consequence of low scanning time? limited magnification thermal…

A: AFM refers to Atomic Force Microscopy or Scanning force Microscopy. It is a high resolution type of…

Question

A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO₃ = 100.0869 g/mol):

What is the ppm?

10,290 ppm
		12,390 ppm
		11,270 ppm
		990 ppm

Table 1. Standrdization of the EDTA solution
mass of CaCO3
0.4567 g
used
Initial burette reading 8.20 mL
Final burette reading 15.65 mL
Volume consumed 7.45 mL
Table 2. Determination of Hardness of Water
Volume of water
sample
50.00 mL
Initial burette reading 15.65 mL
Final burette reading 24.85 mL
Volume consumed 9.20 mL

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

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 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

For Indirect Iodometric Analysis of Copper... ~0.0896g KIO3 necessary to consume 350mL of 0.1 M Na2S2O3, Na2S2O3 is stored in an amber glass bottle until ready for use. Primary Standard KIO3 has 2g of KI, 50mL of DI water, and 10 mL of 1.0M HCl is added then immediately titrated with Na2S2O3 until medium yellow or straw... then 5mL of starch indicator is added and titrated again until blue black color turns clear. Unknown CuO use 1.2G of Unknown, 20mL of HNO3 heated until sample dissolved, 25 mL of DI water added and boiled until clear light blue color, after cooling 1:1 NH3 added (~34.47 mL of NH4OH reagent) until permanent deep blue color amine complex, 2g of NH4HF2 added and swirled until dissolved, 3 g of KI is added then titrated immediately with Na2S2O3 until brown color of iodide is nearly gone (brown milk color), 2 g of KSCN and 3 mL of starch indicator is then added with titration continuing until disappearance of new blue black color. 1. Na2CO3 is often added to thiosulfate…
For Indirect Iodometric Analysis of Copper... ~0.0896g KIO3 necessary to consume 350mL of 0.1 M Na2S2O3, Na2S2O3 is stored in an amber glass bottle until ready for use. Primary Standard KIO3 has 2g of KI, 50mL of DI water, and 10 mL of 1.0M HCl is added then immediately titrated with Na2S2O3 until medium yellow or straw... then 5mL of starch indicator is added and titrated again until blue black color turns clear. Unknown CuO use 1.2G of Unknown, 20mL of HNO3 heated until sample dissolved, 25 mL of DI water added and boiled until clear light blue color, after cooling 1:1 NH3 added (~34.47 mL of NH4OH reagent) until permanent deep blue color amine complex, 2g of NH4HF2 added and swirled until dissolved, 3 g of KI is added then titrated immediately with Na2S2O3 until brown color of iodide is nearly gone (brown milk color), 2 g of KSCN and 3 mL of starch indicator is then added with titration continuing until disappearance of new blue black color. 4. Why is the starch indicator solution…
Create a flowchart for the procedures in the determination of water hardness.
An aquifer contaminated with petroleum is found to have the following component concentrations at a particular site: benzene 158 ppm toluene 124 ppm ethylbenzene 91 ppm xylene 45 ppm n-heptadecane 161 ppm pristane 84 ppm Provide an estimate for the age of the spill at this site using (a) BTEX ratio and (b) nC17:Pr ratio. Show your calculations and use units throughout. Give proper s.f. for the answer.
Calculate the hardness of water in ppm CaCO3 if 25.00mL of the sample required 15.00mL of a 0.1000M EDTA to reach the endpoint. (MM CaCO3= 100.09g/mol). ** Need asap pls. Thanks.
A 10-ml transfer pipet and a 200-ml volumetric flask (TC) are used to make 0.100 M and 0.0050 M solutions from a stock solution of 2.000(plus or minus) 0.005 M. Calculate the percent relative error for the three solutions if perfect technique is used. (See Garland Experiments in Physical Chemistry, 10th ed. p. 639-642) Report the two new molaritites
The standard addition method is used to analyze a sample of a river water for mercury. Solution A is made by pipetting 5.00 mL of undiluted sample in to a 10 mL volumetric flask and filling to the mark with DI water. Solution B is made by pipetting 5.00 mL of undiluted sample and 3.00 mL of 15.0 ppb of Hg standard into same 10.0 mL volumetric flask and filling to the mark with DI. Solution A and B are analyzed using atomic absorption spectroscopy and give a percent transmittance values of 56 % and 33 % respectively (not blank corrected). A blank has a transmittance of 96%. What is the corrected absorbance of both solution A and B? A. Solution A: 0.123 Solution B: 0.463 B. Solution A: 0.463 Solution B: 0.234 C. Solution A: 0.123 Solution B: 0.234 D. Solution A: 0.234 Solution B: 0.463
Time on hotplate (min) 60, 66, 68, 75, 85, 95, Mass of ZnCO3 + Filter paper (g) 3.7123, 2.7035, 2.6574, 2.5213, 2.3548, 2.239 Use the following data table and steps a-d below to calculate the concentration of the zinc carbonate. The mass of the filter paper alone (no ZnCO3) was 1.3457 g. The ZnNO3 solution (10.00 mL) was mixed with 15.00 mL of the 1.00 M Na2CO3. Calculate the mass of zinc carbonate formed. How many moles of zinc carbonate formed? Calculate the moles of zinc in the zinc nitrate solution used. Calculate the concentration of the zinc in the zinc nitrate solution.
A 100 g soil containing 20% smectitie mineral matter was mixed with 150 mL solution containing 0.10 M Pb. CEC of pure smectitie is 110 emol(+)/kg. CEC of the soil (cmol(+)/kg) is:
1) The ratio strength of a 10mL vial of neostigmine methylsulfate injection USP is 1:1500. Calculate the amount of neostigmine methylsulfate in milligrams contained in the 10mL vial. (Round to the whole number).
Standardization of Sodium Thiosulfate Solution Primary Standard used: Potassium Dichromate Formula mass of 1o standard: __________________ % Purity of 1o standard: 99.80% Trials 1 2 3 Weight of K2Cr2O7 (g)Weight of K2Cr2O7 (g) 0.0315 0.0331 0.0380 Final Volume Reading Na2S2O3 (ml) 27.50 27.50 34.90 Initial Volume Reading Na2S2O3 (ml) 1.10 0.00 1.00 Net Volume Na2S2O3 used (ml) Molarity of Na2S2O3
The concentration of purified OXA-M290 is tested with a BCA assay. Serial dilutions of a bovine serum albumin (BSA) stock solution are prepared, then pipetted into a 96-well plate; each dilution of the BSA standard is tested in triplicate. Then, bicinchoninic acid and Cu2+ ions are added to all of the wells of the plate. After incubating the plate for 1 hour, a microplate reader is used to measure the absorbance of all of the wells in the plate at 560 nm. This generates the following data: BSA conc. (μg/mL), Replicate 1 Absorbance, Replicate 2 Absorbance, Replicate 3 Absorbance 40, 1.360, 1.403, 1.481 20, 0.750, 0.745, 0.810 10, 0.380, 0.344, 0.398 5, 0.198, 0.160, 0.183 2.5, 0.090, 0.100, 0.085 1.25, 0.038, 0.043, 0.051 0.625, 0.024, 0.028, 0.019 Prepare a calibration curve using these data. You can use Excel, R, SPSS or an equivalent graphing software. In this graph, plot absorbance (y-axis) against the concentration of the protein standard (x-axis). Calculate and plot…