The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO_3,which is equivalent to milligrams of CaCO_3 per liter of water. What is the molar concentration of Ca2+ ions in a water sample with a hardness count of 175 mgCaCO_3L

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A: Given:

Q: What is the pH when 25% of the acid H3AsO4 (pKa = 2.22) has reacted with NaOH in a titration?

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Q: 1. A 0.0250 M Ca(X)₂2 has a pH of 8.049. Ca(X)2 is composed of a Ca²+ cation and an unknown anion X,…

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A: Hardness in groundwater is because of the presence of metal particles, essentially Mg2+and Ca2+.…

Q: A 50.0 mL solution of Ca(OH)2 with an unknown concentration was titrated with 0.340 M HNO3. To reach…

A: Given  Volume of Ca( OH)2  solution ( V1 ) = 50 mL  Molarity of HNO3  ( M2 ) =  0.340 M…

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Q: The molar solubility of sulfathiazole (pKa 7.2) is 0.001 M. What is precipitation pH or least…

A: Given :- pKa of sulfathiazole = 7.2 Molar solubility of sulfathiazole = 0.001 M We have calculate…

Q: 3. Calculate AG for the dissolution of Ca(OH)2 at room temperature and 100 °C.

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Q: Distinguish between physical and chemical properties and changes (§1.1) (SPs 1.1, 1.2) (EPs 1.1,…

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Q: The hardness of water is usually expressed in parts per million (ppm) by mass of CaCO3. What is the…

A: The concentration of calcium ion in the given sample is 1.1×10-3 M. That means we have 1.1×10-3…

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Q: What will be the pH of a buffer solution containing an acid with a pKa of 5.4 with an acid…

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Q: Which of the statements given below is correct? A. Iodometry is a method in which I2 solution is…

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Q: Which of the following statements is correct The value of the molar conductance of the aqueous…

A: The molar conductance increases with the dilution taking place by the dissociation of the ions in…

Q: A: Calculate the solubility product constant for P6C12, if 80.0 mL of a saturated solution of PbCl…

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Q: What is the Ksp of Cr(OH)3 if its solubility is 1.3 x 10-6 g/L? (MM = 103.0 g/mol)     9.6 x 10-31…

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Q: You have a solution that contains acetic acid, (CH3COOH or HAc). The concentration of acetic acid in…

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Q: 3. A 0.4021-g sample of a purified organic acid was dissolved in water and titrated…

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Q: A mixture containing only KCl and NaBr is analyzed by the Mohr method. A 0.2125- g sample is…

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Q: transferred to a flask and titrated using 0.432 M HCl. The endpoint was found to be 4.73 mL of the…

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Q: Calculate the pH at which pilocarpine (basic drug) starts to precipitate from a 2% w/v aqueous…

A: Solution- poOH=pKb + logConjugated acidbasegivehn pKa of pilocarpine…

Q: What mass of AgBr will dissolve in 500.0 mL of 2.70 M NH₃? Ksp for AgBr is 5.0 × 10⁻¹³. For the…

A: We know that,                    AgBr(s)   ⇔  Ag+(aq)  + Br-(aq)                     Ksp = 5.0 X…

Q: A solution was prepared by dissolving 514 mg of K3Fe(CN)6 in sufficient water to give 758 ml of…

A: Mass = 514 mg = 0.514 g V = 758 mL = 0.758 L

Q: T1 0.3217 g 16.86 mL T2 0.3508 g 17.55 mL T3 0.2895 g 14.62 mL MW of KHP = 204.3 g/mole %3D

A: Given data: Molar mass of KHP = 204.3 g/mol Formula used: Molarity=molesVolume (L)

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A: Henderson Hasselbalch equation: Ka is the acid dissociation constant. Given data: Acid is lactic…

Q: One strategy for dealing with the acidification of lakes is periodically to add powered limestone…

A: Solution - According to the question - Given -  Ksp expression for CaCO3 is Ksp = [Ca2+] [CO32-]…

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Q: Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation :…

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Q: A: Calculate the solubility product constant for PbCl2, if 80.0 mL of a saturated solution of PbCl…

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Q: Mass of KxFe(C2O4)y · zH2O : 5.60 g Mass of sample : 0.155 g Mass of FeCl3 used in preparation :…

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Q: Which of the following is incorrect: a. General steps in qualitative analysis include: Method…

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Q: What is the solubility (in grams per liter) of lead (II) chromate, PbCrO4, in 0.13 M potassium…

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Q: Calcium phosphate (Ca3(PO4)2; MM = 310.18 g/mol), a large component of human bones and teeth, has a…

A: Given: KSP of Ca3(PO4)2 is 2.07×10-33 at 25oC Molar mass of Ca3(PO4)2 is 310.18 g/mol   Note: Since…

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Q: 5. A water supply company, One Team, found out that their water supply had been contaminated with a…

A: Given:Ksp of MgCO3 = 3.5 x 10-8mol2L-2Ksp of Mg(OH)2 = 1.8 x 10-11mol3L-3

Q: To determine the concentration of an EDTA solution, the following zinc(II) solution is prepared:…

A: metallic zinc (m(Zn) = 0.301 g) is dissolved in dilute sulfuric acid, the resulting solution is…

Q: calculate the concentration of Ca2+ in a saturated solution of Ca(OH)2 (ksp= 0.0000055) with a pH of…

A: pH=12.55  pOH =14-12.55 = 1.45 pOH =1.45  pOH =-log [OH-] [OH-]=10-1.45 [OH-]=0.0355  M

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A: Given: pH=7.40Ka=6.31×10-8

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Q: You used the back-titration method to experimentally determine the amount of CaCO3 in an Ultra…

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Q: Calculate the mass of Na2S2O3•5H2O needed to prepare a 1.00-liter solution of 0.0700 M…

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Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.