Answered: what is the value of the hardness index…

Science

Chemistry

what is the value of the hardness index for a 750 ml sample of water contains 0.020 g of Ca^+2 and 0.005 g of Mg^+2

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter10: Effect Of Electrolytes On Chemical Equilibria

Section: Chapter Questions

Problem 10.8QAP

See similar textbooks

Related questions

Q: Which of the following is true about TOTAL WATER HARDNESS? (A) carbonates of Ca²+ and Mg2+ that does…

A: Given, Options are :

Q: Calculate the solubility of MgF2 (MW = 62.3 g/mol) in water at 25 °C if its Ksp is 7.4 x 10-11.? No…

Q: What is the molarity of 10.0 mL of 75% v/v ethanol

A: We have to find Molarity if 10 mL of 75% v/v ethanol. This means that in a 10ml solution, 7.5mL…

Q: Use the following data to calculate the Ksp value for each solid. -3 a. The solubility of MgC204 is…

A: a) Given that: Solubility of MgC2O4 = 9.3×10-3mol/L Solubility product constant tells the…

Q: The solubility of magnesium oxalate, MgC2O4, in water is (7.70x10^0)x10-3 mol/L. What is the Ksp…

Q: Calulated the Normality of NaoH/ of Solution /16g/400ml /Na=23/o=16/H=1

A: Given : mass of NaOH(solute) = 16 g Volume of solution = 400 ml To calculate :- Normality of…

Q: The solubility of silver bromate, AgBrO3, in water is (7.70x10^0)x10-3 g/L. What is the Ksp for…

A: Given, Solubility of AgBrO3 - (7.70 × 10-3) g/L

Q: The molar conductivity of an electrolyte solution at 298 K is 135.5 S cm? mol1 and its concentration…

A: Molar conductivity = 135.5 S cm2 mol-1 Concentration = 5.35 × 10-2 M We need to find conductivity.

Q: Calculate the formal concentration in molarity of a sodium acetate solution prepared by diluting…

A: Using equation of dilution we can find final concentration of solution.

Q: Water “softeners” remove metal ions such as Ca²⁺ and Fe₃³⁺ by replacing them with enough Na⁺ ions…

A: First determine the moles of Ca2+. One mole of Ca2+ ion has 2 mol charge present on it. The…

Q: Calculate the solubility of MgF2 (MW = 62.3 g/mol) in water at 25 °C if its Ksp is 7.4 x 10-11.?

Q: The solubility of copper(II) iodate, Cu(IO3)2, in water is (1.90x10^0)x10-1 g/100mL. What is the…

A: Answer: For the sparingly soluble salts it is considered that all of their limited quantity that is…

Q: The pKsp of indium ferrocyanide, In4[Fe(CN)6]3, is 43.720. Calculate the solubility of indium…

A: Given, pKsp of In4[Fe(CN)6]3 = 43.720 Molarity of InCl3 = 69.3 mM Calculate the solubility of…

Q: Oxycodone hydrochloride oral concentrate solution (OXYFAST) contains 20 mg/1 mL. If a dose of 0.75…

A: Mass of 1mL dose is 20 mg. Mass of 0.75 mL dose can be calculated by multiplying this volume of dose…

Q: The solubility of magnesium fluoride in water is 0.015g/L. What is the Ksp value of magnesium…

Q: Enumerate the procedures/processes in the determination of water hardness.

Q: If the Ksp of Ni(OH)2 is 5.48 x 10 16, what is the solubility of Ni(OH)2 in mol/L?

A: The solubility product is equilibrium constant for the dissolution of a solid substance into an…

Q: Calculate the formal concentration in molarity of a sodium acetate solution prepared by diluting…

A: The ppm is parts per million. This is one type of measurement of concentration of the solution.…

Q: cite literature that gravimetric analysis is used to test the purity of any soup product

Q: The addition of 10.00 g of a compound to 250 g of naphthalene lowered the freezing point of the…

A: Depression of freezing point: When a non-volatile solute is added to the solvent, the vapor pressure…

Q: Calculate the solubility of solid Ca3(PO4)2 (Ksp=1.3 x 10^-32) in a .20 M Na3PO4 solution.

Q: The solubility of silver chromate, Ag2CrO4, in water is (2.80x10^0)x10-2 g/L. What is the Ksp for…

Q: What is the solubility of AgCl (Kgp = 1.6 x 10-10) in 5.3 x 103 M NaCl? %3D 1.9 x 10-9 M O 6.4 x…

A: As the complete dissociation of AgCl is not possible, it is generally termed as sparingly soluble.…

Q: The distribution constant for iodine between an organic solvent and H2O is 85. Find the…

A: Polar and non-polar organic substances do not mix with each other due to different intermolecular…

Q: K Q : [4] [B] Please calculate the molar solubility of ALPO4 (Ksp = 9.84 x 10-21 ) in a 8.12 molar…

Q: Calculate the formal concentration in molarity of a sodium acetate solution prepared by diluting…

Q: Which of the following is true about TOTAL WATER HARDNESS? A sulfates of Ca²+ and Mg²+Ca and Mg that…

Q: Calculate hardness of water if water sample contains Ca(HCO3)2=40ppm

A: Intrdouction : We have to calculate hardness of Ca(HCO3)2 .

Q: Analysis of a groundwater sample collected from Well No. 8 of Stratford, Ontario showed: pH = 7.8,…

A: For the water sample to be accurate in terms of quality standards, the total concentration of…

Q: What are the most important differences between the phase diagram of a pure solvent and the phase…

A: Given statement, Important differences between the phase diagram of a pure solvent and the phase…

Q: Which dissolution process would be most exothermic? A. KCI in H20 B. CH3CH2OH in CH3OH C. C2H6 in…

A: Generally, there are three steps in each dissolution process. 1. Breaking up of bonding of solute…

Q: What is the solubility of KCI at 80C 150 140 KI 130 120 110 100 NANO3 90 80 70 60 NHẠCI KCI NaCI 50…

A: The solubility chart given is as shown below. To Find : Solubility of KCl at 80 oC.

Q: What is the solubility of CO2 in a soft drink (which is mainly water) that was bottled under a CO2…

A: Given, Bottled under a CO2 pressure of 4.4 atm solubility of CO2 in a soft drink =?

Q: A 30.0 mL aliquot of 0.300 M H_3 PO_4 is mixed with 90.0 mL of 0.200 M KOH, and the mixture is…

A: The molarity or the concentration can be defined as the ratio of number of moles of solute which are…

Q: Describe the Henderson–Hasselbalch Approach?

A: An aqueous solution containing the mixture of a weak acid and its conjugate base is called as a…

Q: One gallon of certain lotion contains 946 mL of benzyl benzoate. Calculate the percentage (v/v) of…

A: Solution - According to the question - Given - One gallon = 3.8 liter 3.8 liter contains 946 mL of…

Q: Calculate the solubility of MgF2 (MW = 62.3 g/mol) in water at 25 °C if its Ksp is 7.4 x 10-11.? No…

A: From ICE TABLE-

Q: A solution was prepared by dissolving 1310 mg of K3 Fe (CN), (329.2 g/mol) in sufficient water to…

A: Note : I have been asked to solve part B only.

Q: Calculate the concentration of Ca**, Cl- in mM/L and meq/L; and hardness in mg/L as CaCO3 produced…

A: Hardness is expressed as milligrams of calcium carbonate equivalent per litre. Calcium carbonate is…

Q: The Ksp for copper (II) chromate (CuCrO4) = 3.6 x 10-6. What is the solubility of CuCrO4 in grams/L?

Q: Calculate the vapor pressure al 25.0 °C of a solution that has 11.5 g urea, CO(NH), dissolved in…

Q: What is the solubility oh PbF2 in water? The Ksp for PbF2 is 2.7 x 10^-8

Q: Calculate the freezing point depression of a solution containing 0.125 mol of NaCl dissolved in…

A: Given : Moles of NaCl = 0.125 mol. And mass of water = 0.250 Kg Since water is present in excess…

Q: Write out the equilibrium expression for the solvation of Ag2CrO4 in water

A: The equilibrium expression for the solubility of an ionic compound in water can be written on the…

Q: The vapor pressure of 2-propanol (60.096 g/mol) is 50.00 kPa at 338.8 °C, but it fell to 49.62 kPa…

A: Given: Molar mass of solvent = 60.096 g/mol Mass of solvent = 250 g Vapor pressure of pure solvent =…

Q: What process or processes accounts for the presence of arsenic in well water?

A: When the level of Arsenic in the human body increases, a person suffers from Arsenic poisoning. Its…

Q: 4. What is the concentration in molarity, M, of total sodium ions (Na+) in the base mineral media…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: prepare a standard solution of a Sodium Chloride (NaCl), 0.2 N in 250 ml of water. (atomic weight :…

Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

what is the value of the hardness index for a 750 ml sample of water contains 0.020 g of Ca^+2 and 0.005 g of Mg^+2

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

Which of the following is true about TOTAL WATER HARDNESS? All of the choices are correct expressed as the concentration of CaCO3 present in a water sample sulfates of Ca2+ and Mg2+Ca and Mg that can be precipitated by boiling carbonates of Ca2+ and Mg2+ that does not precipitate on boiling
The solubility of manganese (II) hydroxide (Mn(OH)2) is 2.2 x 10-5 M. What is the Ksp of Mn(OH)2?
describe how you can prepare 500mL of 0.10 M Fe2O3 (159.69g/mol) from the primary-standard-grade solid.
The distribution constant for iodine between an organic solvent and H2O is 85. Find the concentration of iodine remaining in the aqueous layer after extraction of 50mL of 1.00x10-3 M iodine with two portion of 25mL organic solvent?
Based on the following molarities obtained,1.00 x10^-1 , 1.04 x10^-1 and 1.0 2x10^-1. fine the average molarity and standard deviation.
A 30.0 mL aliquot of 0.300 M H_3 PO_4 is mixed with 90.0 mL of 0.200 M KOH, and the mixture is evaporated. Will the salt that crystallizes out be K_3 PO_4, K_2 HPO_4, or KH_2 PO_4? Show your calculations by using an ICE table (or two or three). H_3 PO_4(aq) + KOH_(aq) rightarrow KH_2 PO_4(aq) + H_2 O (l) The next proton on the H_2 PO_4^- would start to react only when more OH^- was added, over and above the first mole: KH_2 PO_4(aq) + KOH_(aq) rightarrow K_2 HPO_4(aq) + H_2 O (I) The final proton on the HPO_4^2- would start to react only when more OH^- was added, over and above the second mole: K_2 HPO_4(aq) + KOH_(aq) rightarrow K_3 PO_4(aq) + H_2 O (I)
Determine the lime and soda ash does, in mg/L as CaO and Na2CO3, to soften the Thames River to a final hardness of less than 125 mg/L as CaCO3. Assume that all the alkalinity is bicarbonate and that the lime is 90% pure and the soda ash is 97% pure. (4.21)
One gallon of certain lotion contains 946 mL of benzyl benzoate. Calculate the percentage (v/v) of benzyl benzoate in the lotion.
A stock solution of 75% v/v ethanol was diluted with distilled water to prepare 1L of 42% v/v ethanol. (Density of ethanol = 0.789 g/mL; MW of ethanol = 46 g/mol). What is the molarity of 10.0 mL of 75% v/v ethanol?
What process or processes accounts for the presence of arsenic in well water?
Calculate: 1)mean Experimental solubility of calcium hydroxide 2)Standard deviation 3)RSD(pph)
An impure sample of 250 mg of adipic acid was recrystallized from 2.0 mL of boiling water. The solution was cooled to room temperature slowly and further cooled in an ice bath. What is the maximum amount of recoverable adipic acid at 0 oC? Solubility of adipic acid at 0 oC is 0.3 g/ 100 mL Group of answer choices 6 mg 249 mg 244 mg 250 mg